Billy Goat TKD502SP Impeller Removal and Chipper, Drive, Chain Adjustments, Chain Replacement

17MAINTENANCE continued

17.1IMPELLER REMOVAL and CHIPPER

19. If chipper blade properly clears anvil surface, proceed to step

20.If not, return to (step 14) and add or subtract shim washers as needed to obtain a correct gap.

20.Reinstall engine, impeller and jackshaft assembly compo- nents onto housing in reverse order of removal (see drive section on page 9).

21.Before connecting spark plug wire, slowly pull engine starting rope to insure that impeller rotates freely.

22. Reinstall spark plug wire.

fig. 6

fig. 7

17.2	Maintenance Schedule		Follow these hourly
			maintenance intervals.
	Maintenance Operation	Every	Every 5 hrs	Every 10	Every 25
		Use	or (Daily)	hrs	hrs

Engine (See Engine Manual)

Check for excessive vibration

Clean Debris Bag

Check bag strap tightness

Inspect for loose parts

Inspect for worn or damaged parts

Lubricate Chains and Clutch

Inspect Chains and Clutch

17.3DRIVE

Chains are normal replaceable wear items. A new chain should not be used on worn sprockets. Sprockets should be replaced when replacing chains.

Stop engine and disconnect spark plug wire before making adjustments.

CHAIN ADJUSTMENTS

1.Remove chainguard (item 118) and 3 screws (item 81 & 71).

2.Inspect chains (items 87 & 88), for wear, (see chain replace- ment), lubrication and correct adjustment.

3.If adjustments are required, loosen 4 carriage bolts (item 90), that hold bearing brackets for jackshaft assembly.

4.Adjusting all (3) chains at same time is necessary and can be done by pulling jackshaft (item 93), up and forward.

5.Tension chains - similar to bicycle chain tightness with

about 1/8” (3.2mm) deflection with light hand pressure mid- way between sprockets. A slightly loose chain is better than an over tightened chain. DO NOT over tighten.

6.With chains aligned and tensioned, and jackshaft (item 93), square and level, tighten carriage bolts (item 90).

7.Completely rotate drive wheels around several times to insure there are no excessively tight areas in the chain.

8.Repeat steps 4 thru 7 if chains need readjustment.

9.Reinstall chainguard (item 118).

CHAIN REPLACEMENT

1.With chain guard removed, loosen carriage bolts (item 90), that hold jackshaft (item 93), and bearing plates (item 101).

2.To replace inner chain (item 88), remove jackshaft assembly and install replacement chain.

3.To replace wheel chains (item 87), slide bearing plates

(item 101), toward engine to loosen chains. Remove front wheels. Reinstall replacement chains with wheels and onto

jackshaft sprockets.

4. See steps 4 thru 7 for chain alignment and adjustment.				9
5. Reinstall chainguard (item 118).				MAINTENANCE
	CLUTCH ADJUSTMENT
The clutch control cable is pre-adjusted at the factory, so when
the bail is released, rod (item 115), engages clutch assembly
(item 121), to stop forward drive motion and allow forward and
backward free-wheeling. When the bail is held against handle,
the clutch rod moves away from clutch assembly to allow drive
engagement.
If drive will not disengage, adjust and align control bracket so that
rod (item 115) fully contacts triangular plate on clutch assembly
when bail is released (see fig. 8).
See lubrication intervals on Maintenance Schedule.
Control Rod 115		Triangular
		Plate	Clutch 121
Bracket

Part No. 890207 Page 9 of 12 Fig. 8 Form No. F021795E