It is a comet cx1500 water pressure washer with a prisma 31 tecmseh engine and my problem is the pull start mechanism is wrecked

SOURCE: pressure washer stalls out when wand nozzle is released

common for not starting unless trigger engaged as you are turning the pump as well as engine creating pressure,as for stalling pump has unloader valve which is probably in need of grease(use good silicone grease)this allows water to ciculate when trigger released.

michael

• 122 Answers
• Posted on May 12, 2009

SOURCE: Oil for Comet pump

aftermarket oil will be fine just use same grade of oil,all manufacturers want that extra kick,

SOURCE: My pull cord to my pressure washer is hard to pull

take out the spark plug and trying pulling it , if its still tight then you may have seized your pump ) , put a rag over te spark plug hole as there may be fuel/oil mix in the cylinder , check the oil in the engine , check the oil in the pump ( look for milkey white , if found then your pump back seals have gone )

SOURCE: We have a Karcher G2500VH pressure washer. If you

Hi, Karcher calls the unloader valve a spill valve,
this is a link to a full drawing/parts listing , and your fault description might well be a sticking /seized unloader(spill ) valve hope this helps
http://www.pressureparts.com/ManualViewPage.aspx?Manual=/mmDEV/PDF/karcherparts/g2500vh.pdf

the part number is on page 9 of the drawing
spill valve 45910400
hope this helps , we usually use some good quality silicone grease to lube the valve ,

SOURCE: New Troy-Bilt 3000 psi - Very Hard to Hot Start

When you run the unit and shut if off, release the pressure from the spray wand before trying to restart the engine. This built up pressure will cause it to be very hard to start as you have found out. If it does not start on the second pull release the pressure again. Another option is do do what I did on mine. I simply put a pull tie on the handle so I can pull the trigger back and use the pull tie to hold the trigger open. Make sure if you do this, that you remove the high pressure orifice from the end of the wand before attempting to start the engine. Otherwise the pressure will come on abruptly and could injure you or do property damage.