MTD Troy-Bilt 900 Series 21 Inch Self Propelled Lawn Mower Owners Manual

5
10.
11.
12.
Usingbracketafrompair ofthepliers,slot  onpullidlerbackpulley.and rotate belt keeper
Slide the belt out from between the belt keeper
bracket and the idler pulley. See Figure 16.
Squeeze the belt together and push belt forward.
Press the control arm inward towards the deck and
remove the six speed cable from the slot. See Figure
17.
Maintenance
13.
14.
15.
Pivot the control arm down away from the pulley and
belt.
Lift off the lower pulley assembly and remove the old
belt from around the crankshaft.
Place the new belt over the transmission pulley. Start
the belt in pulley groove and rotate pulley until belt is
seated in transmission pulley.
WARNING
16.
17.
Place belt between idler pulley and the belt keeper
bracket.
When removing the
cutting blade or belt,
protect your hands
with a pair of heavy
gloves or use a heavy
rag to hold the blade.
Figure 16
Using pliers, rotate the belt keeper bracket so that it
snaps into slot on the idler bracket.
18. Tightentwo 7/16”thewrenches.idler pulley bolt and locknut ½ turn using
3IX�SPEED
CABLE�SLOT
19. Place belt between the two pulley halves on the
crankshaft. Make sure to route the belt inside the belt
guard pin. See Figure 18.
20.
Pinch belt together so that it is not in the pulley
groove, and the lower pulley can be pushed towards
the engine. See Figure 19.
An unbalanced blade
will cause excessive
vibration when rotat-
ing at high speeds. It
may cause damage
to mower, and could
break causing per-
sonal injury.
21. Pivot the control arm back to its original position  and
reinstall the six-speed cable into the slot.
22. Check and make sure the belt is routed inside the
pulley halves and the belt guard pin.
23.
housing.Reinstall the bolt securing transmission  to rear mower
24.
Pivot the baffle back to its original position  and secure
Figure 17
with three hex screws earlier removed. You will need a
3/8”
socket for these screws.
Cutting grass in
sandy soil condition
causes abrasive wear
to the blade.
"ELT�'UARD�
0IN
Figure 1
Figure 19
12
Product Specification
CategoriesLawn Mower Manual, MTD Lawn Mower Manuals, Troy-Bilt Lawn Mower Manuals
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- 44 pages
Document TypeOwner's Manual
LanguageEnglish
Product BrandMTD, Lawn Mower
Product TypeWalk Behind Mower
Document File TypePDF
Publishermtdproducts.com
Wikipedia's PageMTD Products
CopyrightAttribution Non-commercial
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