Craftsman 18' 42cc chainsaw won't start but has spark
bdawg8569
13 years ago
Featured Answer
Sort by:Oldest
Comments (25)
maryland_irisman
13 years agolast modified: 9 years agobdawg8569
13 years agolast modified: 9 years agoRelated Discussions
Craftsman Tractor won't start
Comments (1)The fact it didn't fire with starter fluid (good way to ruin a small engine) indicates you don't have spark. As long as the PTO is switched OFF, the only thing that would prevent spark is a grounded kill wire or bad coil....See MoreCraftsman 42cc chainsaw - Compression too low?
Comments (6)Joe, you might be in trouble due to adding to this post. Not by me since they are related. LOL 1. Check for a good blue spark again, even ck the old plug again. Firing and firing under compression are two different issues. You might need a spark tester that will check for spark with the plug installed (from your auto store, only if you need it or borrow it if they will loan). How many pulls was the 89 of compression showing? 2. The turns out from a light seat are too much IMO. I feel 1 - 1 & 1/8 or ü might get you started and eliminate flooding. 3. The flooding issue might dictate a carbâÂÂs issue as a bad diaphragm or possibly not installed properly. Did you check the metering valve for any debris etc.? Did you check the small fuel screen inside the carb? Did you rem all screws and verify all ports were open with compressed carb cleaner, fine wire, compressed air or Etc???...See MoreStihl Chainsaw - starts but won't run
Comments (78)My 1997 Stihl TS 510 Brazilian made cut off saw (same metal base as a chainsaw, carb's a Tillotson) ran well for 10 minutes, then lost power if under load, but would spin up if not under load and sound ok, but bog down again if loaded. So, I replaced the ignition coil with Stihl part and it coughed once after a couple pulls but didn't start, then I have a very short shot of ether, ran for .5 second, then, no more signs of starting. Pulled carb, looked at hoses, cleaned carb with brake cleaner, diaphragms look good, it ran a second on first pull, then no coughs, nothing. The upper seal on the carb, just below air filter is not completely torn, but is thin and tattered. There is a very small gas leak, a few drips around the hose attachment onto the big rubber fitting that pushes with some effort into the metal hole the hoses run through to the gas tank. IDK if the Tillotson is original, or the last guy had problems? I took the hoses off, blew through them, no visible issues. I think it's a fuel issue. What's my next move?...See MoreCraftsman Lawn Tractor Won't Start
Comments (65)Seat switch connector has a built in "shorting bar" which will close the kill circuit when the connector is unplugged from the switch. Unplugging the connector from the switch gives the same results as if the seat is not occupied. Seat switch is just one switch in the safety interlock circuitry that can cause the engine to have no spark. The brake pedal interlock switch is actually 2 switches in one assembly. One of the brake switches is dedicated to starter inhibition, and the other switch is to kill spark and stop the engine. The PTO switch also has a circuit dedicated to the kill wire. You can disconnect the kill wire from the magneto to see if that restores spark. If doing that restores spark, something is grounding the kill wire somewhere. Could be a chafed wire....See Morehandymac
13 years agolast modified: 9 years agobdawg8569
13 years agolast modified: 9 years agomaryland_irisman
13 years agolast modified: 9 years agohandymac
13 years agolast modified: 9 years agobdawg8569
13 years agolast modified: 9 years agoForeverwood
11 years agolast modified: 9 years agoJim Jakosh
7 years agolast modified: 7 years agoJim Jakosh
7 years agolast modified: 7 years agoklem1
7 years agoJim Jakosh
7 years agoMike C
6 years agoCameron Ells
6 years agokennedytom
6 years agobrokenbeetle
6 years agoroivany
6 years agohandymac
6 years agoHU-113090961
4 years agolast modified: 4 years agoJim Jakosh
4 years agoCarson Abboth
4 years agoHU-503104992
2 years agoStetson Reece
last yearDave Ovington
last year
Related Stories
HOUZZ TOURSMy Houzz: It All Started With a Rug
One floor covering from Kazakhstan inspires a whole global vibe in a traveler’s San Francisco apartment
Full StoryORGANIZING‘Tidying Up’ Author Marie Kondo Tells How to ‘Spark Joy’ at Home
A new book from the author of ‘The Life-Changing Magic of Tidying Up’ delves deeper into her KonMari Method of decluttering and organizing
Full StoryCONTRACTOR TIPS10 Things to Discuss With Your Contractor Before Work Starts
Have a meeting a week before hammers and shovels fly to make sure everyone’s on the same page
Full StoryREMODELING GUIDESWhat to Consider Before Starting Construction
Reduce building hassles by learning how to vet general contractors and compare bids
Full StoryREMODELING GUIDESPlanning a Kitchen Remodel? Start With These 5 Questions
Before you consider aesthetics, make sure your new kitchen will work for your cooking and entertaining style
Full StoryTASTEMAKERSA 'Parks and Recreation' Star Comes Out of the Woodwork
Before Tinseltown called, he was a craftsman. Now Nick Offerman has turned his Los Angeles woodshop into a collective
Full StoryBATHROOM DESIGN18 Sumptuous Vanities for Singular Bathrooms
Uncommonly beautiful or dazzlingly detailed, these dream vanities bring a rarefied air to bathrooms
Full StorySTORAGE18 Rooms Made Better With Pegboard
A grid of tiny holes punched in hardboard can be your versatile best friend in every room
Full StoryLIGHTING10 Chandeliers for People Who Don't Like Chandeliers
Get all the chandelier benefits without channeling Liberace, thanks to wood, paper, wire — and even a surprising old-fashioned staple
Full StoryDECORATING GUIDES15 Ways to Make Your Home Speak Spanish
You won't need a translator to appreciate the beauty of Spanish-style ironwork, tile, architecture and more around the home
Full Story
Cameron Ells