Snapper 20 manual Continued, Transmiss on P ly-VBelt Replacement, Maintenance, Poly-vbelt routing

Maintenance

!	WARNING		!
DO NOT attempt any maintenance, adjustments or service					A
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious					B
burns, allow sufficient time for all components to cool.
					C
Engine Drive Belt Replacement (Stretch Type Belts
- Continued)					D
IMPORTANT: Drain the fuel tank before tipping the mower.
DO NOT tip the machine with the carburetor or spark plug					E
down. Oil from the crankcase will saturate the air filter and
					F
cause the engine to be hard to start or not start at all. If
contamination does occur, the air filter will have to be					G
replaced.
		Reproduction
3. Remove the driven disc. Refer to the Section entitled					Figu e 34: Removi g the drive disc
“Driven Disc Replacement” for driven disc removal
procedure.				Transmiss on P ly-V Belt Replacement
4. Drain the fuel tank before tipping the mower. Do not tilt
the mower with the spark plug or carburetor down. Tilt				1. Remove he dr ven disc. Refer to the Section entitled
the mower up on its rear wheels and remove			he blade		“Repla ing Driven Disc Rubber Ring”.
and blade hub. Assistance from another pers			n may be	2. Note the routing of the old belt around the three pulleys
necessary to hold the mower in the tilted p siti n.					before removing it.
5. Hold the slotted end of the drive disc b lt (B, Figure 34)				3. Place the new Poly-V Belt (A, Figure 35) over the end of
with a screwdriver and remove the nut (G) and internal					the hex shaft (B) and onto the drive pulley (C).
tooth lock washer (F).				4. Work the belt onto the top of the idler pulley (D).
6. Remove the belt cover, located under the deck.				5. Twist the belt sideways and pull it upward between the
7. Lift the drive disc (A) up and remove the worn belt.					differential bracket (E) and driven pulley (F) and then
8. Loop one end of the new belt over the engine			ulley and		down into the pulley groove. Make sure the Poly-V Belt
insert the other end through the slot in the			ck.		is above the belt guide (G).

9. Loop the belt around the pulley on the bottom of the
drive disc.	E
10. Reinstall the drive disc and retaining hardware.
	A
IMPORTANT: 1) The square shoulder of the drive disc bolt	C
must fit into the square hole of the bushing. 2) The square
end of bushing must fit into the bracket slot.	B

11. Reinstall the belt cover and tighten the bolts securely.
12. Reinstall the blade hub and cutter blade. Recommended	D
torque for the blade cap screw is 40 ft. lbs.

G

F

Figure 35: Poly-v belt routing

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