Lubricating The Drive Chain; Adjusting The Drive Chain - Toro 38547 Operator's Manual

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. 32).
2. Lightly lubricate the drive chain with a chain lubricant
(Fig. 34).
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Figure 34
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. 32).
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.
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. 35).
Figure 35
1. 1/8 to 3/8 in. (3 to 10 mm)
deflection
181
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186
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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 four flange-head bolts (two on each side)
that secure the transmission frame to the engine frame
(Figs. 36 and 37).
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2
Figure 36
1. Transmission
Figure 37
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.
Important Excessive chain tension may cause
transmission damage.
13. Check the speed shift control alignment with the Power
Shift slot. If the gear shift lever does not align with the
Power Shift slot in the control panel (see inset in
Fig. 6), adjust the shift rod length as follows:
A. Disconnect the ball joint from the transmission lever
and loosen the jam nut.
B. Rotate the ball joint up or down until the gear shift
lever aligns with the Power Shift slot.
C. Install the ball joint to the transmission lever and
tighten the jam nut.
14. Connect the wire to the spark plug.
187
2. Transmission frame
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189