Cushman OMC Engine Parts | X-TREMEDIST.COM › 510499 ONE (1) NEW OMC TIMER SHAFT BLACK SEAL TO REPLACE CUSHMAN PART. Image 1 of 2 Image 2 of 2 510499 ONE (1) NEW OMC TIMER SHAFT BLACK SEAL TO REPLACE CUSHMAN PART. $12.99 CONTINUE SHOPPINGUsually found in the cushman truckster/haulster VEHICLES. THIS IS FOR THE 9HP, 18HP, AND 22HP OMC AIR COOLED ENGINES. Get notified by email when this product is in stock. Add To Cart Added! CONTINUE SHOPPINGUsually found in the cushman truckster/haulster VEHICLES. THIS IS FOR THE 9HP, 18HP, AND 22HP OMC AIR COOLED ENGINES. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like 111817 ONE (1) USED OEM OMC TIMER GOVERNOR SPOOL KIT CUSHMAN PART TRUCKSTER HAULSTER FOR 18HP 22HP ENGINE. $14.99 110895 ONE (1) NEW OEM OMC 3-15/16" TIMER/GOVERNOR CONTROL SPRING CUSHMAN PART. $10.99 510613, 510478 ONE (1) NEW CONDENSER (CONDENSOR) to replace cushman part FOR OMC 9HP, 18HP, OR 22HP ENGINE. $15.50 580472 ONE (1) USED OEM OMC TIMER SHAFT ONLY CUSHMAN PART TRUCKSTER HAULSTER FOR 18HP 22HP ENGINE. $14.99 111822 ONE (1) NEW OEM OMC TIMER RADIAL BEARING CUSHMAN PART TRUCKSTER HAULSTER. $19.99