Yamaha Nmax 125 Manual

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EAU1722A
PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
Maintenance and lubrication, periodic
EAU32125
General maintenance and lubrication chartNO. ITEM ROUTINEINITIAL ODOMETER READING
600 mi
(1,000 km)  or1
month 2,000 mi
(4,000 km)  or6
months 4,000 mi
(7,000 km)  or
12
months 6,000 mi
(10,000 km)  or
18
months 8,000 mi
(13,000 km)  or
24
months 10,000 mi
(16,000 km)  or
30
months
1 Air filter element •Replace. —— —
2 V-belt case air filter 
element • Clean
—————
3
*
Front brake •...

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9
*
Steering bearings• Check bearing assemblies for 
looseness.
• Moderately repack with lithium- soap-based grease every 8000 mi 
(13000 km) or 24 months. ————
Repack.—
10
*
Chassis fasteners • Check all chassis fitting and 
fasteners.
• Correct if necessary. —————
11 Front brake lever 
pivot shaft • Apply silicone grease lightly.
—————
12 Rear brake lever 
pivot shaft • Apply lithium-soap-based grease 
lightly. —————
13
*...

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PERIODIC MAINTENANCE AND ADJUSTMENT
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* Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.
TIP
From 12000 mi (19000 km) or 36 months, repeat the maintenance intervals starting from 4000 mi (7000 km) or 12 months.18
*
Engine oil strainer• Clean. ———
19 Final transmission 
oil • Check vehicle for oil leakage.
• Change.
———
20
*
V-belt • Replace. Every 1200 0 mi (18000 km)
21
*
Front and rear brake 
switches •...

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EAUT2710
TIP8 Air filter and V-belt filter
9This model’s air filter is equipped with a disposable oil-coated paper element, which must not be cleaned with
compressed air to avoid damaging it.
9 The air filter element needs to be replaced and V-belt filter needs to be serviced more frequently when riding in
unusually wet or dusty areas.
8 Hydraulic brake service
9After disassembling the brake master cylinder and caliper, always...

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PERIODIC MAINTENANCE AND ADJUSTMENT
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Panel, removing and installing
EAU18771
Removing and installing
panelsThe panels shown need to be removed
to perform some of the maintenance
jobs described in this chapter. Refer to
this section each time a panel needs to
be removed and installed.
1
2
1. Panel A
2. Panel B
EAU19272
Panel ATo remo
ve the panel
Remove the screw, and then pull out-
ward on the areas shown.
1
2
1. Panel A
2. ScrewTo install the panel
Place the panel in...

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PERIODIC MAINTENANCE AND ADJUSTMENTSpark plug, checking
EAUT1835
Checking the spark plugThe spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked in
accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug1. Place the vehicle on...

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TIP
If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4 ~ 1/2 turn
past finger tight. However, the spark plug
should be tightened to the specified
torque as soon as possible.4. Install the spark plug cap.
5. Install the panel.
Engine oil
EAUT2592
Engine oilThe engine oil level should be checked
before each ride. In addition, the oil must
be changed and the oil strainer...

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1
1. Oil filler cap4. Install the engine oil drain bolt, andthen tighten it to the specified
torque.
1
1. Engine oil drain bolt
Tightening torque:Engine oil drain bolt:5. Refill with the specified amount of
the recommended engine oil, and
then install and tighten the oil filler
cap.Recommended engine oil:See page 8-1.
Oil change quantity:
0.85 L (0.90 US qt, 0.75 Imp.qt)
ECA11670
NOTICE●
● ●
●
●
Do not use oils with a diesel...

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EAU20064
Final transmission oilThe final transmission case must be
checked for oil leakage before each ride.
If any leakage is found, have a Yamaha
dealer check and repair the scooter. In
addition, the final transmission oil must
be changed as follows at the intervals
specified in the periodic maintenance
and lubrication chart.1. Start the engine, warm up the final transmission oil by riding the
scooter for several minutes, and
then...

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PERIODIC MAINTENANCE AND ADJUSTMENT7. Check the final transmission casefor oil leakage. If oil is leaking,
check for the cause.
EAUT2660
Air filter and V-belt case air
filter elementsThe air filter and V-belt case air filter el-
ements should be cleaned at the inter-
vals specified in the periodic mainte-
nance and lubrication chart. Check both
filter elements more frequently if you are
riding in unusually wet or dusty areas.
The air filter check hose must be fre-
quently...