MTD 970 Series 21 Inch Self Propelled Rotary Lawn Mower Owners Manual

Remove the hex bolt from the rear of unit holding
the transmission to the mower housing.
See Figure 17.
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 the pulley groove and rotate the
pulley until the belt is seated in transmission pulley.
Place the belt between the idler pulley and the belt
keeper bracket.
Wheel
Hex Bolt
Using pliers, rotate the belt keeper bracket so that it
snaps into slot on the idler bracket.
Tighten the idler pulley bolt and lock nut half a turn.
Place the belt between the two pulley halves on the
crankshaft. Make sure to route the belt inside the
belt guard pin. See Figure 20.
Cutting Height
Adjustment
Wheel
Figure 17
Upper Pulley
Half
Tilt the transmission forward and loosen the idler
pulley bolt and lock nut half a turn. See Figure 18.
Tab
Transmission
Pulley
Belt
Belt
Lower Pulley
Half
Belt Keeper
Bracket
Belt
Guard Pin
Idler Pulley
Transmission
Bracket
Figure 20
Idler Pulley
Bolt and
Locknut
IMPORTANT: When replacing the belt, do not disas-
semble the lower pulley assembly.
Figure 18
Pinch both sides of the belt together so that the belt
is not in the pulley groove, and the lower pulley can
be pushed towards the engine. See Figure 21.
Using a pair of pliers, pull back and rotate belt
keeper bracket from the slot on the idler pulley.
Slide the belt out from between the belt keeper
bracket and the idler pulley.See Figure 18.
Squeeze the belt together and push it forward,
while pressing the control arm inward towards the
deck and remove the six speed cable from the slot.
See Figure 19.
Lower Pulley
Half
Belt
Six-Speed
Cable Slot
Belt
Control
Arm
Belt
Guard Pin
Figure 21
Pivot the control arm back to its original position
and reinstall the six-speed cable into the slot.
See Figure 22.
Figure 19
15
Product Specification
CategoriesLawn Mower Manual, MTD Lawn Mower Manuals
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- 36 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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