Official USLMRA Rules Summary
The following is a summary of the official USLMRA Racing Handbook (Rulebook) and General Competition
Regulations. Modifications should only be made after consulting the Handbooks. This summary represents
extracts from the Handbook, but is not a complete account of the Official Rules.
Drivers must be members of the U.S. Lawn Mower Racing Association except in the Stock Class or first time racers. Drivers must be 18 years of age. Drivers 16 and 17 years of age need parental permission. All drivers must sign a release discharging the USLMRA from liability,
Events are open to all self-propelled rotary or reel style riding lawn mowers. The mower must originally have been designed and sold commercially to mow lawns. It must remain suitable for lawn cutting, apart from the modifications permitted in the Handbooks.
Every mower entered in any USLMRA event must be approved for competition by Technical Inspection. Any
mower may be re-inspected at any time by the Chief Steward or Chief Technical Inspector.
CUTTING BLADES MUST BE REMOVED COMPLETELY FROM ALL MOWERS. Non-stock mowers must be
equipped with an automatic throttle closing device. All mowers must be equipped with an engine safety cut-off
switch-Mower brakes must be in good condition, operating on at least 2 wheels. Fuel must be pump gas. The only additive allowed is STA-BIL Fuel Stabilizer.
Driver Safety Equipment
Every driver must wear an automobile racing or motorcycletype safety helmet. Every driver shall wear long pants, a long-sleeved shirt, gloves and shoes on the track. It is MANDATORY that all drivers wear an “approved for racing” neck support.
STOCK CLASS: As delivered from the factory
IMOW CLASS Front Engine, highly regulated.
PREPARED CLASS: Modified drive train, engine etc.
FX CLASS: Major Modifications allowed.