Boat runs fast for a short time then Adjust carburetor high speed needle to lean. Open needle counter-clockwise in slows down when at full throttle. 1/8 increments between water testing. Engine stalls or runs very hot. Water pump or cooling lines clogged. Check water pick-ups, pump and hoses for internal debris. Engine sounds raspy -Carburetor high speed needle to rich. Close needle clockwise in 1/8 or misses. increments between water testing. - If your engine has a make sure it is fully open Engine surges at - Low fuel. full speed. - Fuel cap breather hole clogged - Fuel pick-up lines reversed. Clutch will not disengage. - Engine idles too high. See carburetor adjustments. - Clutch bolts rusted or dirty. Clean or replace. Engine revs-up; clutch Clutch shoes and or clutch bell worn. Must be replaced. will not engage. EXHAUST Large amount of black oil is evident - Tighten exhaust manifold or canister. inside the hull. - Replace exhaust gasket. - Replace exhaust coupler. Exhaust header loosens up after Check exhaust manifold screws and tighten if necessary after each use. If running. persists, change exhaust gasket. Do not use thread lock on exhaust manifold bolts. HULL Boat runs flat on water causing Raise out-drive angle slightly positive until the hull runs 1/3 or less surface control issues. contact. Boat pulls to the right when throttle is Add more left rudder trim to compensate for propeller torque. It is best to set up increased. your boat by trimming it to run straight at high speeds. Prop torque is more evident in models than in real boats and must be dealt with. HARDWARE Strut bearings wear frequently - Check prop for balance. - Check stub shaft for trueness.
Boat runs fast for a short time then slows down when at full throttle. Adjust carburetor high speed needle to lean. Open needle counter-clockwise in 1/8 increments between water testing. Engine stalls or runs very hot. Water pump or cooling lines clogged. Check water pick-ups, pump and hoses for internal debris. Engine sounds raspy or misses. -Carburetor high speed needle to rich. Close needle clockwise in 1/8 increments between water testing. - If your engine has a make sure it is fully open Engine surges at full speed. - Low fuel. - Fuel cap breather hole clogged - Fuel pick-up lines reversed. Clutch will not disengage. - Engine idles too high. See carburetor adjustments. - Clutch bolts rusted or dirty. Clean or replace. Engine revs-up; clutch will not engage. Clutch shoes and or clutch bell worn. Must be replaced. EXHAUST Large amount of black oil is evident inside the hull. - Tighten exhaust manifold or canister. - Replace exhaust gasket. - Replace exhaust coupler. Exhaust header loosens up after running. Check exhaust manifold screws and tighten if necessary after each use. If persists, change exhaust gasket. Do not use thread lock on exhaust manifold bolts. HULL Boat runs flat on water causing control issues. Raise out-drive angle slightly positive until the hull runs 1/3 or less surface contact. Boat pulls to the right when throttle is increased. Add more left rudder trim to compensate for propeller torque. It is best to set up your boat by trimming it to run straight at high speeds. Prop torque is more evident in models than in real boats and must be dealt with. HARDWARE Strut bearings wear frequently - Check prop for balance. - Check stub shaft for trueness.
Bonzi_RTR_Boat_Manual_Full_Page_V1_7.docx