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5. Drain the oil.
6. Install the oil drain plug.
7. Fill the crankcase with oil. Refer to Filling the Engine
Crankcase with Oil on page 11.
8. Wipe up any spilled oil.
9. Connect the wire to the spark plug.
Lubricating the Drive Chain
Lightly lubricate the drive chain after every 15 operating
hours and at the end of the snowthrowing season.
1. Disconnect the wire from the spark plug and ensure that
the wire does not contact the plug (Fig. 24).
2. Lightly lubricate the drive chain with a chain lubricant
(Fig. 32).
Figure 32
1. Drive chain
3. Wipe up any excess oil.
4. Connect the wire to the spark plug.
Adjusting the Drive Chain
Check the chain deflection after every 25 operating hours.
If the deflection mid span between the transmission and the
axle sprocket is not between 1/8 and 3/8 in. (3 and 10 mm),
adjust the drive chain.
1. Stop the engine and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug and ensure that
the wire does not contact the plug (Fig. 24).
3. Drain the gasoline from the fuel tank. Refer to
Emptying the Fuel Tank on page 24.
4. Shift the wheels into the rear position.
5. Move the speed shift control into second gear.
6. Tip the snowthrower forward onto its auger housing and
block it so that it cannot fall.
1
181
7. Check the deflection of the chain by lifting up on it with
moderate pressure at the mid span. There should be a
1/8 to 3/8 in. (3 to 10 mm) deflection (Fig. 33).
1. 1/8 to 3/8 in. (3 to 10 mm)
deflection
8. If the deflection is not between 1/8 and 3/8 in. (3 and
10 mm), go to step 9; otherwise, return the snowthrower
to its upright position.
9. Loosen the 4 flange-head bolts (2 on each side) that
secure the transmission frame to the engine frame (Figs.
34 and 35).
1
1. Transmission
1. Flange head bolts
10. Pivot the rear of the transmission frame until the chain
deflection is between 1/8 and 3/8 in. (3 and 10 mm).
11. Tighten the flange-head bolts.
12. Check the chain deflection.
23
1
186
Figure 33
2
187
Figure 34
2. Transmission frame
1
189
Figure 35
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