GENERAL MOWER REQUIREMENTS
These general requirements apply to ALL racing classes. Any EXCEPTIONS to these requirements are listed in the individual Class Build Rules.
ENGINE:
-Overhead cam engines are not allowed any Class. No liquid cooled engines in any class.
-All mowers that do not have the top of the engine completely covered by the hood must have the
flywheel covered by either the recoil housing, the stock wire housing or racer made cover.
-All positively charged terminals must be insulated with a cover or heavy tape, and the battery
must be well secured.
-ALUMINUM FLYWHEELS ARE MANDATORY for all Ungoverned mowers.
-ALL governed class racing mowers must have original stock flywheels.
-Fuel lines must be clamped at all joints.

FRAME:
-Discrete strengthening is allowed.
-Front and rear axles must use original frame as primary mounting point. The original frame can be used, and can be reinforced.
-Minimum 4" ground clearance to frame in all prepared classes.
-Minimum 2” ground clearance to frame in all FX classes.
-No offset or stagger.
-Body must be mounted in the center of the wheels.
-Offset measured from centerline to the outside of tire sidewall.
-Wheels may not be mounted off center unless originally mounted offset.

WHEELBASE:
-Wheelbase may not be altered.
-Maximum width 40" sidewall to sidewall in Prepared Classes (unless otherwise stated per class rules)
-Maximum width 42” sidewall to sidewall in FX Classes

WHEELS:
-See Class Rules for minimum diameter.
-Wheels must be the same size on each axle
-No dual or tandem wheels.
-NO factory lawn mower wheels allowed in any class (except I-MOW & JP classes)

TIRES:
-Tire height must match in size on each axle

REAR AXLE:

-Mowers must be free of projections which could injure the driver or a competitor, or damage another mower.
-No axle or wheel mounting bolts may protrude beyond the face of the tire sidewall.

FRONT AXLE AND STEERING:
-Steering wheels may be replaced with any commercially available pieces. -Steering columns must pass through the original hole in the hood or dash at the original angle.
-All nuts and bolts attaching the steering assembly (tie rods and spindles) must be secured with lock nuts, castle nuts with cotter pins, or coiled tension pins.
-No push pull steering in any prepared classes. (See FX rules for this exception and requirements)

DRIVELINE:
-All exposed chains and sprockets must be fitted with metal guards to direct a broken chain
downward.
-All mowers must utilize a clutch.
-Centrifugal and/or torque converts clutched are allowed only in FX classes.
-No centrifugal and/or torque converter clutches in prepared classes.
-Prepared Class mowers with horizontal engines that are factory built with such, will be permitted to have drive-shafts as long as the mower has an operational clutch. However, the driveshaft will be covered and go to a shiftable transmission and the transmission will connect to the rear axle by either chain or belt.

BRAKES:
-Mower brakes must be in good condition and easily operated. They must be operating on at least the two rear wheels.
-Brakes may be improved in any way.
-Rear brake rotors may not be mounted on jackshafts only on
rear axles.

THROTTLE:
-All mowers MUST be equipped with an automatic duel spring throttle closing device. -Throttle and brake controls may be relocated.
-Mowers in all classes must be fitted with sturdy double return springs mounted at two (2) different mounting points on both ends to help eliminate the throttle from sticking or failure to completely close when released.

KILL SWITCH:
-All mowers must be equipped with a kill switch, which will turn off the ignition if the driver leaves the mower.
Non-stock mowers shall use a tether, mechanically attached to the mower and driver. Velcro is NOT acceptable.
-Pressure switches are not allowed.

-Kill switches must remain in closed position (engine not running) until the driver mounts the mower.
-Additional switches that can by-pass the kill switch are not allowed.
-The ignition interrupter kill switch and cap/prong must be commercially available for racing vehicles such as jet skis, snowmobiles, 4-wheelers, etc. (Magnetic, or any other form of homemade switch is not allowed)

BODY:
-Cutting blades must be removed completely from all mowers. -Mowing Decks or simulated decks are optional (must have 2.5” of ground clearance if using)
-Glass headlights must be removed.
-Mowers must be safe and complete, all parts and panels in place, with no missing nuts, bolts, cotter keys, etc.
-Mowers must be neat and clean, with paint in new or very good condition. No excess dirt, oil, grease, rust or primer.
-Sponsor graphics must not interfere with mower’s racing numbers or class letters. -Front bumpers or not permitted in prepared classes
-Rear Bumpers are allowed, but not required. If used, they must be built to these standards: loop style bumper, square tubing may NOT be used.
-Fenders may be discretely moved, modified and altered so that the driver can lower the seat assembly. Fender trimming is allowed, however, chopping of fenders is not allowed. The following are guidelines:
-Trimming or Flaring fenders so that there is a 1 ⁄2" of clearance between the fender edge and the top of the tire.
-Trimming should follow the contour line of the fender
-Trimming or flaring that results in sharp edges will not be allowed.
-Fender should retain its original look.
-Modifications to the fender assembly are allowed to lower the seat; however, there are certain guidelines:

-Lawn mower seats only
-Seat bottom will be no lower than 13" from the ground

-Fender cutouts are permitted but must have protective trimming to eliminate the possibility of having sharp edges.

Nerf Bars:
Nerf Bars should be mounted on the running boards as long as they meet the set dimensions noted below:
-Come within 2” of the rear tire and no closer than 1/2”.
-Do not stick further out in width than the sidewalls of the rear tire.
-Center MUST be filled in so foot cannot slip through.