Troy-Bilt 52058, 52057 owner manual Maintenance

Section 5: Maintenance

WARNING

Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, disconnect spark plug wire and move wire away from spark plug. Remove ignition key on electric start models.

Failure to follow these instructions can result in serious personal injury or property damage.

11. Using a 9/16" wrench and a 7/32"

hex (Allen) wrench, loosen the mount-

ing nut (G, Figure 5-6) and screw on

the idler pulley (I) a few turns, or until

belt is free to slip out between pulley

and belt guide (J). Remove belt.

head assembly (Figure 5-6A), seat the spindle head assembly into the hole. Check that the threaded end of the spindle shaft is protruding through the bottom of the hole.

E

P

12. Loosen rear belt guide screw (K,

Figure 5-6) enough to allow belt to be

removed from engine pulley (L).

Remove belt from unit.

Belt Replacement

1. Install belt on engine pulley (L,

Figure 5-6) and retighten rear belt

guide screw (K) securely.

2. Route belt between idler pulley (I,

Figure 5-6) and belt guide (J), to inside

of brake arm (M), and next to die-cast

belt guides (N).

8.Reinstall the flat washer (D, Figure 5-4), belleville washer (C) and nut (B) on the spindle shaft. Note that the dished-in side of the belleville washer must face the flat washer. Tighten the nut securely (torque to 50 ft./lbs.), while checking frequently to ensure that the spindle head rotates freely. If the spindle head binds, it could be due to the belt being pinched between the spindle head and the belt guides. If so, remove the spindle head assembly and repeat steps 5-7.

F

Figure 5-5

3. Securely tighten the mounting nut

(G, Figure 5-6) and screw in the idler

pulley (I).

4. Securely tighten the idler arm

mounting screw (S, Figure 5-6). After

tightening, check that idler arm is free

KR T

N

O

S

to rotate. If not, remove idler arm and

check for debris that may be interfering

with freedom of movement.

5. Look at the spindle head mounting

hole (O, Figure 5-6) and note the

grooves that are cut into the inner

sides of the hole. These grooves were

formed by the splines on the spindle

shaft (E, Figure 5-5).

6. Install the belt on the spindle head

pulley (P, Figure 5-5) and insert the

spindle shaft (E) (with attached spindle

head assembly) into the spindle head

mounting hole (O, Figure 5-6). Rotate

the spindle head assembly to align the

splines on the spindle shaft with the

grooves in the mounting hole. Check

that the belt is still in the pulley groove

and is to the inside of the die-cast belt

guides (N, Figure 5-6).

7. Using a firm push on the spindle

L J

I G

Figure 5-6

9. Replace plastic plug (A, Figure 5-4).

10. Reattach the idler arm spring (R, Figure 5-6) in the hole in the idler arm

(T).

11. A new belt may need to be ad- justed by following the Adjusting Trimmer Head Engagement instruc-

tions in this Section.

N

M

Figure 5-6A

13