Engines used regularly at speeds over 15000 r.p.m. This precaution is advised after crash or similar violent stopping. Always check the pitch of your propeller after such an accident. It is emphasised that parts removed from any engine must be marked in order that they may be replaced in exactly the same position. No matter how much care is taken, however, the dismantling of mated parts invariably results in some degree of re-mating and consequent wear, and it is therefore never advisable, and should be done only when absolutely necessary.
Excess carbon is ejected by the engine automatically as it accumulates.
If you adhere to the instructions, we will service your motor, should that become necessary, immediately, subject only to the prepayment of a return postage and handling fee of 3.00. All motors are guaranteed against defects in materials and workmanship for a period of two months from the date of purchase. Dismantling, the use of abrasives of any kind, and the entry of instruments and of foreign matter via exhaust or intake shall be deemed to be a contravention of the terms of the guarantee, and in such circumstance, any repairs free of charge will be at our sole discretion.