Briggs & Stratton 150Z Series manual Mower Belt Replacement, Front To Back Leveling

Figure 38. Orient Blades Front-to-Back

Front To Back Leveling

If the cut is uneven, the mower may need leveling. Unequal or improper tire pressure may also cause an uneven cut. See CHECK TIRE PRESSURE.

1.Turn the blades front-to-back as shown in Figure 38. Measure the distance from the ground to front tip of center blade, and from ground to rear tips of left hand and right hand blades (Figures 38). Front tips should be 1/8"-1/4" (3-6 mm) higher than rear tips. If not, proceed to step 2.

2.The front mower hitch rod (A, Figure 39) is used to adjust front-to-back leveling. To raise or lower the front of mower deck, loosen the two rear jam nuts (B) on both sides of the hitch rod (A). Adjust the front jam nuts (C) on both sides of the hitch rod (A) to adjust the deck level. When adjusted correctly, tighten the rear jam nuts (B) to lock hitch rod in place.

C

B

A

Figure 39. Front-to-Back Leveling

A.Hitch Rod

B.Rear Jam Nut

C.Front Jam Nut

MOWER BELT REPLACEMENT

E

WARNING

Before inspecting or servicing the mower, turn the mower blades OFF, turn the ignition switch OFF, and allow all moving parts to stop. Remove ignition key, then disconnect the spark plug wire and fasten it away from the spark plug.

Mower Drive Belt Replacement

1.Park the rider on a level surface. Disengage the PTO, turn off the engine and set the ground speed control levers to PARK. Remove the key.

2.Use the idler pulley arm (C, Figure 40) to release belt tension and remove the mower drive belt (A) from the PTO pulley (E).

3.Remove the belt from the remaining deck pulleys. Note: It is not necessary to remove the mower deck.

4.Install the new belt (A) as shown in Figure 40.

A

F

F

B

C

D

Figure 40. PTO Belt Routing

A.Mower Drive Belt

B.Right Arbor Pulley

C.Idler Pulley Arm

D.Left Arbor Pulley

E.Engine PTO Pulley

F.Backside Idler Pulley

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