Troubleshooting, Adjustments, & Service

PARKING BRAKE ADJUSTMENT

Brake Adjustment

1.Disengage the PTO, stop the engine, block the front wheels, remove the ignition key, and lock the motion control levers into their neutral lock positions.

2.Elevate the rear end of the unit, making sure it is safely supported.

3.Before attempting brake adjustment, check the brake gear (A, Figure 23a), brake arm (B), park brake bracket (D), brake rod (E), and compression spring

(F) for dirt or debris that may affect brake operation.

4.Check to see that the brake arms (B) are engaged against the brake gears (A), with the teeth on the arms meshing with the teeth on the gears.

Note: The rear wheels may need to be moved slightly for the teeth to mesh properly.

5.With the parking brake disengaged (motion control levers moved from their neutral locked positions), measure the length of the compression spring (F). The measurement should be between 2-1/2” and 2- 3/4”. If not, tighten or loosen the brake rod adjust- ment nut (C) until the correct measurement is achieved.

D E

F

C

B

A

Figure 23a. Parking Brake Adjustment

A.Brake Gear (One Each Side)

B.Brake Arm (One Each Side)

C.Brake Rod Adjustment Nut

D.Park Brake Bracket

E.Park Brake Rod

F.Compression Spring

FRONT SUSPENSION ADJUSTMENT (SELECT MODELS)

The shock assembly can be adjusted to vary the amount of pre-load applied to the springs. This allows the opera- tor to customize the ride according to operator’s weight and operating conditions.

LESS PRE-LOAD:

Light operator weight

Softer, more cushioned ride

Best for relatively flat terrain

MORE PRE-LOAD:

Heavy operator weight

Stiffer, more rigid ride

Better handling and greater stability on hilly terrain

TO ADJUST THE SPRING PRE-LOAD:

1.Park machine on a flat, level surface. Disengage the PTO, stop the engine and engage the parking brake.

INCREASE

DECREASE

 

A

Figure 24. Front Suspension Adjustment

A.Pre-Load Adjustment Collar

2.See Figure 24. Turn the pre-load adjustment collar

(A) CLOCKWISE to increase the pre-load, turn COUNTER-CLOCKWISE to decrease the pre-load. Make sure both shocks are set to the same amount of pre-load.

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Snapper RZT20380KH, RZT185380BVE, RZT20420BVE2 manual Parking Brake Adjustment, Front Suspension Adjustment Select Models

RZT185380BVE, RZT20380KH, RZT20420BVE2 specifications

The Snapper RZT20420BVE2, RZT20380KH, and RZT185380BVE are three standout models in the Snapper line of zero-turn riding mowers, designed for both residential and commercial use. Each of these mowers combines advanced technology, robust engineering, and user-friendly features to deliver a reliable lawn care experience.

The Snapper RZT20420BVE2 is a high-performance model equipped with a powerful 20 HP Kawasaki engine. This unit features a 42-inch cutting deck that enables smooth and efficient mowing for medium to large lawns. One of its key characteristics is the commercial-grade, heavy-duty construction, which ensures durability and longevity. The mower is also designed with a zero-turn radius, allowing for exceptional maneuverability around obstacles and tight spaces, making it ideal for complex lawn designs.

The RZT20380KH model offers a slightly smaller and versatile option with an 18.5 HP Kohler engine. It features a 38-inch cutting deck, providing an effective cut for smaller lawns or areas with numerous landscaping features. The adjustable cutting height ensures a customizable mowing experience, catering to various grass types and growth conditions. The mower's integrated dual hydrostatic transmission provides smooth operation and enhances control, making it easy for users to navigate around flower beds and shrubs.

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