Hi and welcome! This website is entirely dedicated to the Honda fourstroke moped and motorcycle family.
Whether you have for example a Honda C50, CB50, SS50, PC50 or CB350, this is where you need to be!
Use the search field on the left, or use the menu to navigate yourself through a maze of data!
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QUICK MAINTENANCE REFERENCE MANUAL FOR
|Adjusting fuel level||Ignition and Electrical
|Engine removal||Cylinder head & valves|
|Spark plug electrode gap should be 0.024 - 0.028 inch on all models. Recommended spark plug is NGK type C6HB. The tightening torque can be found here.
|The variable venturi type carburetor is shown in Fig. HN1-1. The idle mixture is adjusted at needle (11). Idle speed should be 1500RPM and is changed by turning stop screw (10). Normal setting for needle (11) is 1 1/8 turns open. Refer to Fig. HN1-1 and the following specifications:|
NOTE: Type A & B carburetors are used on P50 only.
Type 50A Carburetor
Type 50B Carburetor
|Main jet||(18)||55||00000-000-000||Main jet||(18)||62||00000-000-000|
|Idle Jet||(21)||35||00000-000-000||Idle Jet||(21)||35||00000-000-000|
|Needle Jet||(24)||2.6 x 2||00000-000-000||Needle Jet||(24)||2.6 x 1.55
|Circlip||(6)||3rd groove from
top of needle
|(7)||00000-000-000||Circlip||(6)||2nd groove from
top of needle
|1||Cable adjuster||15||Float cover|
|7||Valve needle||21||Idle Jet|
|9||"O" Ring||23||"O" Ring|
|10||Idle stop screw||24||Needle Jet|
|11||Idle mixture needle||25||Fuel inlet needle|
|12||Choke plate||26||Fiber washer|
|13||Choke shaft||27||"O" Ring|
|14||Choke spring||28||Inlet valve seat|
|ADJUSTING THE FUEL LEVEL
|Fuel level on early models with type A carburetor should be set as follows: Remove carburetor and cover (15). Invert the carburetor. Clearance (Fig. HN1-2) between fuel bowl and float with the inlet valve closed should be 3.4-3.6mm (0.1378 inch). Adjustment is accomplished by bending float arm.|
|On P50 models with type B carburetor, float setting can be checked after removing the float valve cover. Fuel inlet valve and float are inside cover as shown in Fig. HN1-3. With inlet valve closed (cover inverted), distance (H) between float and bowl should be 4.9- 5.1mm (0.1969 inch). If incorrect, bend the float arm as required.|