homelite string trimmer won't run after washing

mvronAugust 24, 2012

I acquired the Homelite string trimmer - model d725cd -. It ran OK but the primer bulb was old and kind of brittle and carb area was pretty dirty. I removed then primer bulb and then decided to keep it. I gently - so I thought - tried to remove the grease in the carb area. Of course, now it work run at all. NO spark - nothing. I removed the fuel hoses that run from the fuel tank to the carb, they seem to be pumping fuel to the carb - although the primer bulb is so discolored, it's had to tell if enough is getting through. Any ideas what to check for? The unit has completely dried out following the wash. I'm a little concerned about the gasket that sits between the bottom of the primer bulb and the top of the carb. Even if it was damaged a little bit, wouldn't one get some kind of spark? Thanks for any ideas. It has good compression.

Thank you for reporting this comment. Undo
loger_gw

Please share some more history as hrs or yrs of service, any PM maintenance over the years.

Instantly no fire:

1. I would suspect a shorted wire, wet wire or bad kill switch (disconnect the switch and check for fire).

2. Try a different and known good working plug. How are you checking for fire (grounded to metal)?

3. You would get fire with a bad gasket. Sucking air would be the issue with bad bulb/fuel lines/gaskets.

4. Post some or a good general Pic showing as much as possible of what you have worked with.

You have to look for the impossible at times, consider the quality of the trimmer (semi commercial or what)?

    Bookmark   August 24, 2012 at 8:04PM
Thank you for reporting this comment. Undo
rcmoser

I do some guessing starting off with NO spark? Did you bump the ign switch? look for disconnected wire or faulty switch (on or off switch just like house light switch) either it on or off can check using mulitmeter across the connections of the switch). Did you mess with the spark plug??? Check the gap. lay removed plug on head connected to the spark plug wire, switch to on and pull the rope. With the spark plug grounding against the head (touching) and the switch on You shoud see Blue spark if you pull the rope fast enough???? I bet it getting spark but no gas. Try priming it with carb. cleaner (providing you are not flooding it (spark plug would be wet??? if wet it won't fire) either directly into the cylinder bore (through the spark plug hole or down the carb venturi (hole in the carb.) As suggested above need alot more information and condition (plug wet or not, plug gap good, ign switch good, priming, and anything else you can think of???)

    Bookmark   August 25, 2012 at 10:46AM
Thank you for reporting this comment. Undo
mvron

There is no on/off switch. Just a kill switch once the engine starts. The plug looks a little wet - not extremely so. Like I said, it ran until I decided to clean/wash the unit - which I tried to do carefully. I'm going to test for spark next. Thanks for the ideas.

    Bookmark   August 25, 2012 at 10:52PM
Thank you for reporting this comment. Undo
rcmoser

Might want to check the kill switch make sure it's not broke in the kill mode. type I seen are spring loaded to unground when you take your finger off it. IF you have no fire you need to troubleshoot the switch and make sure it not grounding out in either position.

    Bookmark   August 26, 2012 at 12:08AM
Thank you for reporting this comment. Undo
ewalk

I would confirm that the kill switch is not grounding out when open position as rc has indicated a multi meter will confirm its status.

    Bookmark   August 26, 2012 at 9:29AM
Thank you for reporting this comment. Undo
mvron

Thanks for the kill switch ideas. I will follow-up and report back.

    Bookmark   August 26, 2012 at 11:37PM
Sign Up to comment
More Discussions
Old Troybilt Tiller Engine Replacement
I need to replace the eninge on my Troybilt tiller...
themaniam1
Harbor Freight small utility tralier question
I just purchased this harbor freight trailer. http://www.harborfreight.com/1090-lb-capacity-40-1-2-half-inch-x-48-inch-mini-utility-trailer-with-12-inch-four-lug-wheels-and-tires-90153.html I...
rlmunsey
Woodzig electric pruner
I have a Woodzig electric pruner and use it often....
ranger_ric
Looking for a new "top box" for my tool chest.
My old one died of old, old age and I didn't replace...
exmar
Brand new chainsaw stalls - tank fuel line above gas level?
Hell all I just bought my first chainsaw: http://www.amazon.co.jp/gp/aw/d/B008EQ0L3I It's...
theniceguy
Sponsored Products
Grayson 60" Round Outdoor Dining Table Cover - Sand
$369.50 | FRONTGATE
Baxton Studio Pageant Wood Contemporary Upholstered Dresser
Overstock.com
Three-Light Oil Rubbed Bronze Bowl Ceiling Fan Light Kit
$43.95 | Bellacor
50 Lizard Correspondence Cards with Personalized Envelopes
$172.00 | Horchow
Le Salon Guillotine Pet Nail Cutter - 91257
$12.99 | Hayneedle
White & Navy Stripe Dish Towel
$12.99 | zulily
Elk Lighting 28H in. Bronze Open Work Vase - 129-1018
$82.00 | Hayneedle
Tile Redi Shower Bases Redi Base 40 in. D x 60 in. W. Barrier Free Shower Base
Home Depot
© 2015 Houzz Inc. Houzz® The new way to design your home™