Husqvarna Mzt 52 Manual

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MAINTENANCE
IMPORTANT INFORMATION
The sharpening of \fl\gades should \fe carri\ged out 
\fy an authorized ser\gvice workshop\b
Cutting Blades
To attai\f the best mo\awi\fg effect, it is importa\ft that 
blades are well sharpe\fed a\fd\a \fot damaged.
Replace blades that \ahave bee\f be\ft or cr\aacked whe\f 
hitti\fg obstacles.
Let the service wo\arkshop decide whet\aher a blade 
with large \ficks ca\f\a be repaired/grou\fd or must be 
replaced. Bala\fce the\a blades after sharpe\a\fi\fg.
Check the blade mou\a\fts.
WARNING!
Blades are sharp\b P\grotect your 
hands with gloves an\gd/or wrap 
\flades with a heavy \gcloth when 
handling\b
Blade Replacement
1. Remove blade bolt b\ay tur\fi\fg cou\fterclockwise.
2. I\fstall \few or resharpe\fed blade wit\ah stamped 
GRA\b\b \bIDE faci\fg towa\ards grou\fd/grass 
(dow\f) or THI\b \bIDE U\aP faci\fg deck a\fd sp\ai\fdle 
housi\fg.
3. I\fstall a\fd tighte\f b\alade bolt securely.
4. Torque blade bolt to 4\a5-55 ft-lbs (122 N\am).
IMPORTANT INFORMATION
Special \flade \folt \gis heat treated\b
Replace with a Husq\gvarna \folt if requi\gred\b
Do not use lower gr\gade hardware than 
specified\b
8058-1671. Blade
2. Blade bolt (spec\aial)
3. Cutter housi\fg
Blade attachment  
						

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MAINTENANCE
WARNING!
Blades are sharp\b P\grotect your 
hands with gloves an\gd/or wrap 
\flades with a heavy \gcloth when 
handling\b
Adjusting the Mower D\geck
Check the tire pressure before adjustme\ft of the \a
mower deck. \bee Tire Pressures i\f Maintenance 
sectio\f. Faulty mowe\ar deck adjustme\fts w\aill cause a\f 
u\feve\f mowi\fg result.
Leveling deck
Adjust the deck whi\ale the mower is o\f \aa level 
surface. Make sure the tires are i\fflated to the co\arrect 
pressure. \bee Technical Data / Transmission. If tires 
are u\fder or over i\ffla\ated, you ca\f\fot properly adjust 
your deck.
Four slots co\ftrol the height a\fd p\aitch of the mower \a
deck. The deck sho\auld be adjusted slig\ahtly higher i\f 
the rear.
NOTE: To i\fsure accuracy of leveli\a\fg procedure, 
mower deck drive b\aelt must be i\fstalle\ad prior to 
leveli\fg deck.
1. Wear heavy gloves. T\aur\f each outer blade t\aip to 
alig\f with the deck\a side-to-side.
2. Measure from the floor surface up to the bott\aom 
of the blade tip o\f\a the discharge side\a of the 
mower deck. Retai\f \athis measureme\ft. Move to 
the opposite side, \acheck that measureme\ft is the 
same. If adjustme\ft \ais required, loose\f the lock\a\fut 
a\fd move mou\fti\fg bol\at up or dow\f i\f slot\a u\ftil 
both side-to-side \ameasureme\fts are equal. Retai\f 
measureme\ft.
3. Tur\f both outer blades \ato alig\f with the d\aeck i\f 
fro\ft-to-rear ma\f\fer. Repositio\f rear mou\fti\fg 
bolts up or dow\f u\ft\ail rear of mower deck i\as 
positio\fed level to\a 1/8" higher i\f the rear tha\f the 
side-to-side measur\aeme\ft.
4. Co\ffirm measureme\fts o\fce agai\f. Bl\aade tips 
should be level i\f \aa side-to-side ma\f\fe\ar. I\f the 
rear, blade tips should \abe level to 1/8" higher tha\f 
side-to-side measur\aeme\ft. I\f the fro\ft, blade 
tips should be leve\al to 1/8" lower tha\f side-t\ao-side 
measureme\ft.
NOTE: This will pl\aace the mower deck \ai\f a 
sta\fdard measureme\ft positio\f. Depe\a\fdi\fg o\f 
the type of grass b\aei\fg mowed or e\fvir\ao\fme\ftal 
co\fditio\fs, additio\fa\al adjustme\fts may be\a 
required to achieve the d\aesired cut.
8011-6011. Fro\ft lift arm
2. Chai\f
3. Rear lift arm
4. \blotted deck ha\fg\aer plates
Leveling the mower deck
8058-157Set blades to begin leveling.  
						

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MAINTENANCE
Anti-scalp Rollers\g
A\fti-scalp rollers keep the de\ack i\f the proper positio\f 
to help preve\ft scalpi\fg i\f mo\ast terrai\f co\fditio\f\as. Do 
\fot adjust the rollers to support the deck.
Rollers are properly adjusted whe\a\f they are just 
slightly off of the grou\fd whe\f the deck i\as at the 
desired cutti\fg height i\a\f the operati\fg posi\atio\f. 
IMPORTANT INFORMATION
Adjust anti-scalp r\gollers with the mow\ger on a 
flat level surface\b
Caster Wheels
Check every 200 hours. Check \athat wheels rotate 
freely.
Removal and Instal\glation
Remove \fut a\fd caster\a bolt. Pull the whe\ael out of the 
fork.
To reI\fstall, reverse the order. Tighte\f caster bo\alt.
If wheels do \fot rotate freely, take the u\fit to t\ahe dealer 
for service.
The a\fti-scalp rollers ca\f be set i\a\f three positio\fs:
• Upper positio\f 1 to\a 2½" (25 to 63 mm)\a grass.
• Middle positio\f 2½"\a to 4" (63 to 102 \amm) grass.
• Lower positio\f 4" t\ao 5" (102 to 127 m\am) grass.
The rollers should be ap\aproximately ¼" (6.5 m\am) from 
grou\fd. Do \fot adjust th\ae rollers to support the deck.
IMPORTANT INFORMATION
To avoid deck damage\g, the anti-scalp ro\gllers 
must not \fe adjusted\g to support the dec\gk\b
8058-054Anti-scalp rollers\g
8058-014Caster wheelHardware
Check daily. I\fspect the e\ftir\ae machi\fe for loose\a or 
missi\fg hardware.  
						

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MAINTENANCE
Use protective glas\gses when 
cleaning and washin\gg\b
Cleaning
Regular clea\fi\fg a\fd w\aashi\fg, especially u\f\ader the 
mower deck, will i\f\acrease the machi\fe’s l\aife-spa\f. 
Make it a habit to c\alea\f the machi\fe dir\aectly after use 
(after it is cooled\a), before the dirt sticks.
Do \fot spray water o\f\a the top of the mo\awer deck. Use 
compressed air to clea\f t\ahe top side of mow\aer deck. 
Regularly clea\f deck\a a\fd u\fderside of th\ae deck with 
\formal water pressure. Do \fot use a high \apressure 
washer or steam cle\aa\fer. Avoid sprayi\fg e\fgi\fe\a a\fd 
electrical compo\fe\ft\as with water.
Do \fot ri\fse hot surfaces with cold wat\aer. Let u\fit cool 
before washi\fg.
ZT-3400 Powertrain
IMPORTANT INFORMATION
Any servicing deale\gr attempting a warr\ganty 
repair must have pr\gior approval \fefore\g 
conducting maintena\gnce of a Hydro-Gea\gr® 
product, unless the \gservicing dealer is\g a 
current Authorized Hydro-Ge\gar Service Center\b
Regular exter\fal mai\fte\fa\fce of the\a ZT-3400 
Powertrai\f™ should i\fclude\a the followi\fg:
1. Check oil level i\f \aexpa\fsio\f ta\fks. Whe\f\a the 
e\fgi\fe is cold, the \ata\fks should be at t\ahe FULL 
COLD level.
2. I\fspect the vehicle\a drive belt, idler \apulley(s), a\fd 
idler spri\fg(s). I\f\asure that \fo belt slip\apage ca\f 
occur. \blippage ca\f cause \alow i\fput speed to \athe 
tra\fsmissio\f.
3. I\fspect the tra\fsmis\asio\f cooli\fg fa\f for\a broke\f or 
be\ft blades. Remove\a a\fy obstructio\fs suc\ah as 
grass clippi\fgs, lea\aves or dirt.
4. I\fspect the parki\fg \abrake a\fd vehicle li\a\fkage to 
i\fsure proper actio\f a\fd adjus\atme\ft of the parki\fg\a 
brake.
5. I\fspect the vehicle\a co\ftrol li\fkage to the 
directio\fal co\ftrol arm o\f the tra\fsaxle. \aAlso, 
make sure the co\ftrol arm is securely faste\fed to 
the tru\f\fio\f arm of the tra\fsaxle.
6. I\fspect the bypass \amecha\fism o\f the tra\a\fsaxle 
a\fd u\fit li\fkage to m\aake sure it rotates a\fd 
releases fully.  
						

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LUBRICATION
12/12 Every year
1/52 Every Week
1/365 Every day
Lubricate with grease gu\f
Oil cha\fge
Filter cha\fge 
Level check
8065-095
Lu\frication Schedule\g
General
Remove the ig\fitio\f\a key to preve\ft u\fi\fte\ftio\fal 
moveme\fts duri\fg lub\aricatio\f.
Whe\f lubricati\fg wit\ah a\f oil ca\f, it must\a be filled with 
e\fgi\fe oil.
Whe\f lubricati\fg with grease, u\fless otherwise stated, 
use high grade moly\abde\fum disulphide gr\aease.
For daily use, the m\aachi\fe should be lub\aricated twice 
weekly.
Wipe away excess gr\aease after lubricati\ao\f.
It is importa\ft to avoid getti\f\ag lubrica\ft o\f the b\aelts 
or the drive surfaces o\f the belt p\aulleys. \bhould this \a
happe\f, attempt to c\alea\f them with spir\aits. If the belt 
co\fti\fues to slip af\ater clea\fi\fg, it must\a be replaced. 
Gasoli\fe or other p\aetroleum products must \fot be 
used to clea\f belts.\a
* Cha\fge hydraulic dri\ave filters.
p Cha\fge e\fgi\fe oil e\avery 50 hours.  
						

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LUBRICATION
Wheel and Deck Zerk\gs
Use o\fly good qualit\ay beari\fg grease.
Grease from well-k\fow\f bra\fd \a\fames (petrochemical 
compa\fies, etc.) usua\ally mai\ftai\fs a good \aquality.
Front Wheel Mount
Lubricate with a grease gu\f u\ftil the gr\aease is forced 
out.
Front Wheel Bearing\gs
Lubricate 3-4 strokes with a grease gu\f o\f each set of 
wheel beari\fgs.
8058-068
Lubricating front wheels
8058-131Deck spindle
Deck Spindle
Lower the cutti\fg d\aeck completely.
If a grease gu\f without rubb\aer hose is used, th\ae foot 
plate must be removed.
Lubricate with a grease gu\f, 2-3 strokes per spi\fdle.  
						

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LUBRICATION
Drain old oil filte\grs of all free-flow\ging oil prior 
to disposal\b Place \gused oil in appropr\giate 
containers and dis\gpose of it in acco\grdance 
with laws in your a\grea\b
Transaxle (Transmission) Fluid \gChange
This tra\fsaxle is de\asig\fed with a\f exter\a\fal filter for 
ease of mai\fte\fa\fce. \aTo e\fsure co\fsta\ft fluid quali\aty 
levels a\fd lo\fger li\afe, a\f oil filter cha\a\fge i\fterval of 
every 200 hours is recomme\fded.
The followi\fg procedure is performed with the 
tra\fsaxles i\fstalled \ai\f the mower a\fd the\a mower o\f 
level grou\fd. Apply the pump\a release valve for eac\ah 
tra\fsaxle a\fd set the\a parki\fg brake.
1. Remove the three ¼" filter guard screws a\fd filter 
guard. Clea\f a\fy loose d\aebris from arou\fd the 
perimeter of the fi\alter. \bee illustratio\f.
2. Place a\f oil drai\f pa\a\f (12" or more diameter a\fd 
8 qt. capacity is o\aptimal) be\feath the \aoil filter. 
Remove the oil filt\aer from the tra\fsaxle.
3. After the oil has d\arai\fed, wipe the filt\aer base 
surface a\fd apply a film \aof \few oil to the g\aasket of 
the replaceme\ft filter.
4. I\fstall the \few filte\ar by ha\fd, tur\fi\fg it three-
quarters to o\fe full tur\a\f after the filter g\aasket 
co\ftacts the filter \abase surface.
5. Rei\fstall the filter\a guard. Torque screws to 
65 i\f/lbs. each.
6. Repeat steps o\f the\a opposite side.
7. Drai\f old oil filters\a of all free flowi\fg oil prior\a to 
disposal. Place used\a oil i\f appropriate co\ftai\fers 
a\fd dispose of it i\a\f accorda\fce with laws i\f y\aour 
area.
8. Remove the top por\at plug (see illustr\aatio\f) from 
the left side a\fd r\aight side of the t\ara\fsaxles prior 
to filli\fg with oil.\a This will allow th\ae tra\fsaxles to 
ve\ft duri\fg oil fill.\a
9. Remove the cap from the tra\fsaxles’ e\axpa\fsio\f 
ta\fk located o\f the \avehicle frame.
8019-0101. Filter guard
2. Tra\fsaxle filter
3. Top port plug
ZT-3400 filter change
10. Fill with 20W50 mo\ator oil u\ftil oil j\aust appears 
at the bottom of ea\ach tra\fsaxles’ top p\aort 
(approximately 2 quarts per tra\fsaxle, 4 \aquarts 
total). I\fstall the \atop port lug i\fto each tra\fs\aaxle 
as the oil level reaches the port.
11. I\fstall a\fd torque the top port plugs to 180 i\f./\albs.
12. Co\fti\fue to fill the \atra\fsaxles through the 
expa\fsio\f ta\fk u\ftil t\ahe FULL COLD li\fe is\a 
reached (this will t\aake approximately 23 additi\ao\fal 
ou\fces).
13. Rei\fstall the expa\fs\aio\f ta\fk cap by ha\fd.\a Do \fot 
overtighte\f.  
						

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TROUBLESHOOTIN\f \fUI\WDE
Pro\flemCause
E\fgi\fe will \fot star\at•Blade switch is e\fg\aaged
•\bteeri\fg co\ftrols are \fot locked i\f the\a \feutral positio\f
•Parki\fg brake is \fot\a activated
•Battery is dead
•Co\ftami\fatio\f i\f the \acarburetor or fuel li\fe
•Fuel supply is clos\aed or the tap for t\ahe fuel ta\fk is i\f t\ahe wro\fg 
positio\f
•Clogged fuel filter \aor fuel li\fe
•Faulty ig\fitio\f syst\aem
\btarter does \fot tur\f the e\fgi\fe over•Dead battery
•Poor co\ftacts o\f the\a battery termi\fal cable co\f\fectio\a\fs
•Fuse blow\f
•Ig\fitio\f system faul\aty
•Fault i\f the starter safety circuit, see Safety System  
i\f the Maintenance sectio\f
E\fgi\fe ru\fs rough•Faulty carburetor
•Clogged fuel filter \aor jet
•Clogged ve\ftilatio\f \avalve o\f the fuel ca\ap
•Fuel ta\fk \fearly empt\ay
•Fouled spark plug
•\bpark plug is loose
•Rich fuel mixture or fuel-air mixtur\ae (gasoli\fe)
•Wro\fg fuel type (gasol\ai\fe)
•Water i\f the fuel (ga\asoli\fe)
•Clogged air filter
E\fgi\fe seems weak•Clogged air filter
•Fouled spark plugs
•Carburetor i\fcorrectly adjusted   
						

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TROUBLESHOOTIN\f \fUI\WDE
Pro\flemCause
Machi\fe vibrates•Blades are loose
•Blades are i\fcorrectly bala\fced
•E\fgi\fe is loose
E\fgi\fe overheats•Clogged air i\ftake o\ar cooli\fg fi\fs
•E\fgi\fe overloaded
•Poor ve\ftilatio\f arou\fd e\fgi\fe
•Defective e\fgi\fe spe\aed regulator
•Too little or \fo oil\a i\f the e\fgi\fe
•Fouled spark plug
Battery \fot chargi\fg•Poor co\ftact with b\aattery termi\fal cable co\f\fector\as
•Chargi\fg lead is dis\aco\f\fected
Machi\fe moves slowl\ay, u\feve\fly,  
or \fot at all
•Parki\fg brake o\f
•Bypass valve o\f pump\a ope\f
•Drive belt for the \atra\fsmissio\f gears s\alack or has come of\af
•Air i\f hydraulic sys\atem
Mower deck \fot e\fgag\ai\fg•Drive belt for the \amower deck has come\a loose
•Co\ftact for the ele\actromag\fetic coupli\fg h\aas loose\fed
•Blade switch is faul\aty or has come loos\ae, from the cable 
co\ftact
•Fuse has blow\f
Hydraulic drive leak\as oil•Damaged seals, housi\fg\a, or gaskets
•Air trapped i\f hydr\aaulic system
U\feve\f mowi\fg results•U\fequal tire pressure o\f the left a\fd ri\aght sides
•Be\ft blades
•\buspe\fsio\f for the m\aower deck is u\feve\f
•Blades are dull
•Drivi\fg speed too hi\agh
•Grass is too lo\fg
•Grass collected u\fde\ar the mower deck   
						

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STORA\fE
Winter Storage
The machi\fe should b\ae readied for storage \aat the 
e\fd of the mowi\fg s\aeaso\f, or if it will\a \fot be i\f use for 
more tha\f 30 days.
Fuel allowed to sta\f\ad for lo\fg periods \aof time (30 days 
or more) ca\f leave sticky \aresidues that ca\f plug\a the 
carburetor a\fd disrupt e\fg\ai\fe fu\fctio\f.
Fuel stabilizers are a\f acceptable opti\ao\f as regards 
to the sticky residues that ca\f occ\aur duri\fg storage.
Add stabilizer to t\ahe fuel i\f the ta\fk \aor i\f the storage 
co\ftai\fer. Always use the mi\axi\fg ratios specifie\ad by 
the ma\fufacturer of the stabilize\ar. Ru\f the e\fgi\fe for\a 
at least 10 mi\futes \aafter addi\fg the sta\abilizer so that 
it reaches the carburetor. Do \fot empty the f\auel ta\fk 
a\fd the carburetor if a stabilize\ar has bee\f added.
To ready the machi\fe for\a storage, follow th\aese steps:
1. Thoroughly clea\f the mac\ahi\fe, especially u\fde\ar 
the mower deck. Touch up damage to th\ae pai\ft 
a\fd spray a thi\f laye\ar of oil o\f the u\fde\arside of the 
mower deck to avoid\a corrosio\f.
2. I\fspect the machi\fe \afor wor\f or damaged parts 
a\fd tighte\f a\fy \futs o\ar screws that may have 
become loose.
3. Cha\fge the e\fgi\fe oi\al; dispose of properly.
4. Empty the fuel ta\fks\a or add a fuel stabi\alizer. \btart 
the e\fgi\fe a\fd allow \ait to ru\f u\ftil the \acarburetor 
is drai\fed of fuel o\ar the stabilizer ha\as reached the 
carburetor.
5. Remove the spark pl\aug a\fd pour about a 
tablespoo\f of e\fgi\fe\a oil i\fto the cyli\f\ader. Tur\f 
over the e\fgi\fe so \athat the oil is eve\a\fly distributed 
a\fd the\f refit the spark plug.\a
6. Lubricate all grease zerks, joi\fts, \aa\fd axles.
7. Remove the battery. Clea\f, charge, a\fd s\atore the 
battery i\f a cool place, b\aut protect it from direct 
cold.
8. \btore the machi\fe i\f a c\alea\f, dry place a\fd cover 
it for extra protectio\f.
Service
Whe\f orderi\fg spare parts, please specify \athe 
purchase year, model, type, a\fd se\arial \fumber.
Always use ge\fui\fe Hu\asqvar\fa spare parts.
A\f a\f\fual check-up at \aa\f authorized servic\ae 
workshop is a good \away to e\fsure that the machi\fe 
performs its best the fo\allowi\fg seaso\f.
WARNING!
Never store an engi\gne with fuel in the \g
tank indoors or in\g poorly ventilated\g 
spaces where fuel v\gapor can come in 
contact with open fl\games, sparks, or a\g 
pilot light such as \gin a \foiler, hot water 
tank, clothes drier\g, etc\b Handle the 
fuel with care\b It i\gs very flamma\fle and\g 
can cause serious p\gersonal injury and \g
property damage\b Drain the fuel outdoors, 
into an approved c\gontainer\b Store the fuel 
away from open flam\ge or any source of \g
ignition\b Never use \ggasoline for cleani\gng\b 
Use a degreaser and warm \gwater\b