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By Zrach
I wanted to share a successful workaround for a "no-spark" issue on a 2009 LT-A400.
This is specifically for cases where the CDI has been diagnosed as faulty, but the age or condition of the machine makes the cost of a brand-new OEM unit hard to justify.
Note: This modification compromises the factory “no-start” circuits.
On some malfunctioning CDI units the internally damaged circuitry is only partial.
Feeding full time power to the Parking Brake pin, the unit is triggered to bypass the internal fault and produce a healthy consistent output to the Ignition coil.
The Modification
See the second diagram attached below for the wiring specifics.
The Result:
The machine has clocked over 1,000km since this repair and is still running strong with no ignition dropouts.
⚠️ IMPORTANT SAFETY WARNING ⚠️
Please be aware that this modification compromises the factory safety "no-start" circuits.
The machine will now start in gear. The safety interlock involving the handbrake is no longer functional. The machine can move unexpectedly if the starter is pressed while in gear. Proceed at your own risk. If you sell the machine or let others ride it, ensure they are fully aware that these factory safety buffers have been removed.
Faulty CDI Workaround.pdf
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By Maddman200
Who agrees with me that Yamaha atv quailty was one of the best well built quailty machines money could buy, then 2007 came rolling in and they have gone to complete sh**. Cutting corners everywhere they can and made such unreliable machines
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By Daniel1971
I have a 2009 Honda rancher that has fuel coming out of the injector but will not crank. I can spray gas in through the breather and it will run a few seconds. Any help appreciated
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By jhamrick75
If anyone is having issues with the Mikuni VM24SS carb, I thought I would post what issues I had and how I resolved them.
Acquired a 93 Bayou 220 that had sat for over 4 years.
The carb was extremely corroded and pitted and full of leftover fuel.
Cleaned carb and bowl and was able to get the engine to start.
Within 30 seconds exhaust would heat up and start to glow red hot.
Removed carb and recleaned everything, including a second overnight soak.
Needless to say, after removing the carb for the 5th time and my frustration to the limit I
realized that my attention had been to the carb body and not to the bowl.
There is a small brass rod on the bottom of the carb that goes down into the float bowl but is seperated from the main section. I had cleaned that area very well....I had thought.
***The corrosion had sealed off the channel that runs from the main bowl section to the small tube section on the side of the float bowl. No amount of carb cleaner was going to get it to budge. So i took a small nail and started to scrape away the corrosion and was eventually able to dislodge enought of the corrosion that carb cleaner would flow through that channel. ***
I thoroughly cleaned each side of the channel in the float bowl and reinstalled the carb and now the issue of it running lean is gone.
On a second note the fuel mixture screw was a nightmare to remove as the threads had been corroded and wouldnt let the screw come out. I used a little cutting oil and worked the mixture screw in and out until I was able to push past the corroded threads and completely remove the needle. After a couple passes with a tap to clean the threads it is like new again.
Hope this helps if you are having a lean running machine.
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By utvboard
2009 HONDA BIG RED
Honda enters the MUV (multi-use vehicle) market with a side-by-side machine that leapfrogs the competition to set new standards in utility and recreation. With numerous automotive-based technologies, Big Red features a powerful 675cc OHV liquid-cooled PGM-fuel-injected single-cylinder engine and an automatic transmission with three selectable drive modes plus Reverse, front and rear independent double-wishbone suspension, a roomy cab featuring rubber-mounted bucket seats with adjustable backs, and a specially designed, highly durable, tilting cargo bed. A broad selection of Honda Genuine Accessories will also be offered.
Big Red
KEY FEATURES
- Powerful OHV, liquid-cooled, PGM-fuel-injected 675cc, mid-engine design.
- Automatic transmission with Reverse.
2009 Honda Big Red in Camo
- Three selectable drive modes.
- Front and rear independent double-wishbone suspension for an impressively smooth comfortable ride.
- Roomy cab and rubber mounted bucket seats with adjustable backs designed to comfortably fit a wide range of body types and reduce fatigue on long drives.
Specially designed, high durability, tilting cargo bed
- Specially designed, high durability, tilting cargo bed.
- Wide variety of Honda Genuine Accessories.
- Summer 2008 release. More information to come soon!
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