Troy-Bilt 7 Hp Horse Manual

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3. Using the 3⁄8” wrench, remove the drain plug. The gear 
oil will drain quite slowly since it is thick. After about two 
quarts have drained, tilt the tiller forward so any oil at the 
rear of  the transmission will drain out.
4. Clean the drain plug threads, put non-hardening gasket 
sealant on the threads, and reinstall the plug.
5. Refill the transmission with the correct amount of gear oil 
before operating the tiller again. When oil seeps from the 
oil level check hole, the right amount of gear...

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Lubricate the tiller as follows:
1. Oil the wheel shaft between the wheel hubs and the 
transmission housing. See Fig. 6-10.
2. Oil all pivoting and connecting points on the Wheels/
Tines/PTO Drive Lever and the Wheel Speed Lever. See Fig. 
6 -10 .
3.  Grease the face of the belt adjustment block. See Fig. 6-10.
4. Oil the Depth Regulator Lever, including the spring in the 
mounting bracket. See Fig. 6-10.
5. Oil the full length of the throttle cable casing. Oil threads 
on Handlebar Height Adjustment...

33
How to Measure the Belt Tension
1. Before taking a measurement, be sure the linkages and 
pivot points on the Wheels/Tines/PTO Drive Lever are clean 
and lubricated. If there is any binding, you won’t get true 
measurements. Also, you’ll need the belt adjustment tool 
you received with your new tiller. See Fig. 6-12.
2. Move the Wheels/Tines/PTO Drive Lever fully down to the 
FORWARD position. The clutch roller at the bottom of the 
lever should be positioned underneath the belt adjustment 
block. See...

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3. Insert the belt adjustment tool through the hole in the 
side of the adjustment block, spacing the ends of the tool 
equally on both sides. See Fig. 6-15. Rotate the tool so the 
slotted end faces down.
4. Place the Wheels/Tines/PTO Drive Lever in FORWARD 
position. The arms of the clutch control yoke will be resting 
on the belt adjustment tool and the clutch roller should be 
engaged slightly beneath the adjustment block. See Fig. 
6 -16 .
Adjustment Block
Belt Adjustment Tool
Figure 6-15
Clutch...

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1. Measure the width of the outside edge of the disc as shown 
in Fig. 6-18. Replace the disc before the rubber edge wears 
to a thickness of 1⁄8” or less. Failure to do so could cause the 
steel underneath the rubber to damage the transmission 
pulley.
2. Look for big cracks or missing chunks of rubber from 
the disc. If so damaged, the disc should be replaced 
immediately. See the Service section of this manual for 
instructions on replacing the disc.
NOTE: Extend the life of the reverse disc by...

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3. Use your left hand to hold the Wheels/Tines/PTO Drive 
Lever up in REVERSE, while briefly pulling out the engine 
recoil starter. The reverse disc should turn the lower pulley. 
See Fig. 6-21. If not, or it requires a lot of pressure to hold 
the lever up in REVERSE, then the reverse adjustment bolt 
must be adjusted downward. When correctly adjusted, the 
Wheels/Tines/PTO Drive Lever should pop out of reverse 
when the lever is released, but not require exceptional 
effort to hold it up in the...

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6. Move the Wheels/Tines/PTO Drive Lever to NEUTRAL. 
The switch body on the bottom of the engine mount 
tab should be resting squarely on top of the reverse 
adjustment bolt, and the reverse disc should be at least 
3⁄16” away from the transmission drive pulley. See Fig. 6-19. 
If the reverse disc is any closer than this, raise the reverse 
adjustment bolt (turn it counterclockwise).
7. Check that the reverse disc is at least 3⁄16” away from 
the transmission drive pulley. Then hold the reverse...

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Belt Replacement
Drive Belt
1. Move the Wheels/Tines/PTO Drive Lever to NEUTRAL 
position.
2. While kneeling on the right side of the tiller, create slack in 
the belt by reaching over to the left side of the pulleys and 
pushing in on the center of the belt with your finger.
3.  Use your right hand to move the belt down and away from 
the lower pulley, in the direction of the engine. See Fig. 7-1.
4. Push the belt upward to create slack in the belt. See Fig. 7-2.
5. Lift the top half of the belt up...

9. Push the belt forward then down until it is looped over the 
lower pulley. See Fig. 7-2. Do not yet seat it in either of the 
lower pulley’s grooves.
NOTE: A blunt object, like a ruler, can help you push the 
belt downward if needed.
10. Move the top half of the belt up and over the rubber 
reverse disc, but do not seat it in either of the grooves in 
the top pulley.
11 .  Place the Wheels/Tines/PTO Drive Lever in NEUTRAL.
12 .  Move the top half of the belt into the HIGH Range groove, 
the groove...

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If badly worn, they lose the ability to till deeply. Worn tines leave 
an ever-increasing gap in the middle of a tilled row. The normal 
gap is 3” between the tine tips — replace the tines when the gap 
widens to 5”. See Fig. 7-8. The tines can be replaced individually 
or as a complete set. 
Replacing a Single Tine
WARNING! The tines or tine hooded edges may be 
sharp . Wear thick gloves to protect your hands from 
cuts or scrapes.
WARNING! Wear safety goggles to protect your 
eyes . When loosening...