DYNACYCLE SERVICE BULLETIN #1
DYNACYCLE MISFIRING OR SHORTING OUT
KICK STARTER SHAFT
DYNACYCLE MFG. CO.
DYNACYCLE SERVICE BULLETIN #2
MAGNETO….POINT SETTING…TIMING LOCATION
a. Remove gas tank
2. Timing Location: (Refer to Fig.III, page 4, of the Installation and Operation Manual).
Note: (Fig.II is used for reference only. The Magneto is not
Turn the Magneto Stator Plate or Mounting Plate until
1. Proper electrode gap on the spark plug is 0.025 inch.
ENGINE LOSS OF POWER…PISTON RINGS AND REED VALVE
1. Gradual loss of power or compression may be due to worn or stuck piston rings. All 2-cycle engines will show rather heavy ring wear. Rings are cheap and should be changed if loss of power develops. Carbon should be cleaned from the exhaust ports in the cylinder block at the same time. (Note: Carbon can be cleaned from the exhaust ports without removing the cylinder head. See page 16 of the Installation and Operation manual).
2. Sudden loss of power or compression may be due to a fractured or split Poppet Valve Reed (Part #1101-E). To check this Reed Valve the carburetor must be removed. It is located just forward of the carburetor, mounted on the Reed Valve Plate (Part # 1104-B). If the Reed Valve is fractured, causing a leak, this will prevent transfer of the gas mixture to the combustion chamber above the piston.
PRESSURIZATION OF GAS TANK
1. Due to the fact that 1/2 of the DYNACYCLE gas tank is below the level of the carburetor, pressurizing of the tank is necessary.
This is accomplished through a Disk located under the Pressure Bushing on top of the crankcase. This same Pressure Bushing holds
the Pressure Valve Assembly which is a relief valve to keep a constant pressure of 4 oz. in the gas tank.
a. Loss of the Disk Pressure Valve (Part #1418) or improper seating could cause inability to start or operate the DYNACYCLE.
1. Do not idle the DYNACYCLE engine too slowly. Allow the engine to idle just below the clutch engagement point. A relatively high idling speed will compensate for weather changes and give easier starting. Throttle Adjustment Screw is located on the carburetor cable lever arm immediately above the carburetor.
2. See Paragraph 4, Page 14, of the Installation and Operation Manual for a too-rich or too-lean setting of the carburetor.
1. Pull Neoprene gas line loose from both ends of the cartridge Fuel Filter and plug with 1/4” screw or rivet to prevent gas leaking.
2. Unscrew the serrated cap end of the cartridge Filter body and blow the screen clean.
3. When re-installing the Filter in the gas line, make sure that the Serrated cap end and attaches to the carburetor line, not the gas tank line.
1. All needle (roller) and ball bearings must be pressed in with extreme care. Needle bearings should only be pressed into their cavities with the imprinted or lettered side toward the pressing block or some other hard material.
2. Pack loose needles in the large end of the connecting rod with grease before installing (14 needles in the cap, 14 needles in the rod).
3. Large Main Crank Bearing (Part #1205) should be installed so that the Ball Bearing Retainer (thrust Bearing) operates on the smooth, or non-imprinted side of the Main Crank Bearing. (Note: This is just the reverse of pressing in the needle bearings).
|Copyright dynacycle.org - all rights reserved|