Bolens 675B manual Forward Drive Belt Removal and Installation, Removing the Forward Drive Belt

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

front of the unit (not the operator’s posi- tion). If the belt tension is correct, reinstall the belt cover and secure it with the two nuts.

•If the guide mark is aligned with the guide pin, or moves to the right side of the guide pin, then the belt is too loose and the tension must be readjusted as described next.

3.The reverse idler pulley (L, Figure 5-13) regulates the tension that is applied to the reverse drive belt (P). The following ad- justment will allow the reverse idler pulley to apply more tension to a loose belt.

4.Remove the belt cover.

5.Slip the reverse belt (P, Figure 5-13) off the engine-driven reverse (upper) pulley.

6.On the right side of the unit (as viewed from operator’s position), remove the hair- pin cotter from the clevis pin (R, Figure 5- 13) that connects the reverse idler arm (K) to the reverse adjustable link. Push inward on the reverse idler arm (K) and remove the clevis pin (R).

7.There are two holes in the reverse ad- justable link (S, Figure 5-15). Push inward on the reverse idler arm (K) and install the clevis pin (R) through the inner hole in the reverse adjustable link (S) and out through the single hole in the reverse idler arm (K). Secure the clevis pin with the hairpin cot- ter.

8. Reinstall the reverse belt (P, Figure 5-13) on the reverse (upper) pulley, making sure

R

K

S

Figure 5-15: Installing clevis pin in inside hole of reverse adjustable link.

the belt is located to the inside of the re- verse idler pulley (L, Figure 5-13).

9.Reinstall the belt cover and secure it with the two nuts.

IMPORTANT: If, in future tests for reverse belt tension, the guide mark should again align with or move to the right side of the guide pin, it means that the reverse belt is worn beyond adjustment. Before installing a new belt, you must return the clevis pin to the OUTSIDE hole in the reverse adjustable link.

Forward Drive Belt Removal and Installation

This model has two forward speeds (High

D	B	A
FRONT
		C

Figure 5-16: Belt drive system.

and Low) and one reverse speed. The for- ward engine pulley (D, Figure 5-16) has two grooves for the two forward speeds. The reverse engine pulley (A, Figure 5-16) has one groove for the one reverse speed. The transmission pulley (C, Figure 5-16) has three grooves. The groove closest to the engine is for the reverse belt. The mid- dle groove is for the High speed forward

belt range; the rearmost groove is for the Low speed forward belt range.

A. Removing the Forward Drive Belt:

1.Stop the engine, allow it to cool and dis- connect the spark plug wire before work- ing near the belts.

2.Remove the reverse drive belt following the Removing the Reverse Drive Belt instructions in this section.

3.Move the forward drive belt (B, Figure 5-16) completely off the engine forward drive pulley (D).

4.Slip the forward drive belt completely off the transmission drive pulley (C, Figure 5-16) by moving it to the front of the pul- ley.

5.Pull the forward drive belt up and off the pulleys by feeding the bottom half of the belt in between the engine and transmis- sion pulleys.

B. Installing the Forward Drive Belt:

1.The reverse drive belt must be removed before installing the forward drive belt.

2.Slip the forward drive belt down between the rear of the engine forward drive pulley (D, Figure 5-16) and feed the bottom half in between the engine and transmission pul- leys (see Figure 5-17). Be sure that the belt is to the inside of the forward idler pulley and forward belt guide (see J and I, Figure 5-12).

Figure 5-17: Install forward drive belt over rear of engine forward pulley and bring lower half of belt down and in front of transmission pulley.

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