Difficulty
Moderate
Steps
11
Time Required
01:00:00
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User contributed
Introduction
Access to the fuel pump is not optimal. That said, it is not necessary to disassemble everything; here we will simply make room with a minimum of disassembly.
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undo the air sleeve retaining clip by turning it 1/4 turn and pulling upwards, then open the clip (circled in red) to be able to freely move the starter, accelerator and fuel hose cables
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remove the hot air pipe (it is just fitted)
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Unscrew the air sleeve clamp with a 7mm wrench (or a Phillips screwdriver) and release the sleeve from the air intake pipe
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remove the carburetor cover fixing screw using the 10mm wrench
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unclip the clip from the headdress
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you can use a flat screwdriver to pry
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remove the breather hose and unclip the other hose right next to it (blue arrow)
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tilt the air box/air sleeve/carburetor shroud assembly backwards to make room
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Place a rag around the pump to avoid getting petrol everywhere and loosen the fuel outlet hose clamp with the 7mm wrench
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pull to remove the fuel inlet and outlet hoses
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remove the cloth, unscrew the two pump fixing screws using the 13mm key and remove everything
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remove the old paper gasket with a scraper or other similar tool
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make sure the surface is completely clean
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compare the two pumps: we see here that the new pump is different from the old one but they are totally compatible
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Do not hesitate to call a professional if in doubt.
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Check the condition of the fuel filter and fuel hoses: if they are damaged or too old, it is better to change everything
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present the pump with its new paper seal and its 2 fixing screws
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tighten the 2 pump fixing screws with the 13mm key
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then put the fuel hoses back and tighten the outlet hose clamp with the 7mm wrench
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The inlet hose does not have a clamp because we operate here with very low pressures.
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insert the air sleeve into the air intake pipe then tighten the clamp using the 7mm wrench
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then lock its retaining clip
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reposition the hot air pipe
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Place the cover on the carburetor and tighten the retaining screw using the 10mm wrench.
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then lock the retaining clip
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reinstall the oil breather hose
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Replace the starter, throttle and fuel hose cables in the plastic clip and lock it
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reattach the hose which is located just next to the oil breather
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reconnect the battery and start it up, making sure there are no leaks
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