There's nothing that can compare with the letdown of actually finding out your 660 raptor no spark situation will be keeping you away the trails with regard to the weekend. You go to hit the starter, the engine cranks over perfectly great, but it just won't catch. It's a classic Yamaha headaches that plenty of owners have handled considering that these machines very first hit the dirt back in the particular early 2000s. Whilst it feels like the particular world is ending when your quad is dead in the garage, most of the period, the fix will be sitting right within front of a person if you understand where you can look.
The Raptor 660 is really a legendary device, but it's definitely got its talk about of electrical quirks. Because quads are usually getting a little old now, wiring makes use of get brittle, fittings get corroded, plus components like the stator or CDI begin to give up the ghost. Just before you start throwing expensive parts from it, let's walk through the procedure of determining specifically why that spark disappeared.
Begin with the Simple Things First
This sounds silly, but I can't tell you how many times a 660 raptor no spark issue transforms out to be something incredibly basic. Before you decide to tear the particular plastics off plus start hacking in to the wiring harness, check the wipe out turn on the handle bars. Sometimes they obtain bumped into the particular "off" position, or the internal contacts get full of mud and crud, preventing the outlet from completing. Turn it in return and forth several times to make sure it's really clicking into place.
Next, take a look at your spark plug. This is the particular cheapest and easiest thing to change. Actually if the put looks "okay, " it could be fouled in house. Pull the put boot, unscrew the plug, and take a look with the electrode. If it's black plus wet, it's fouled. If it's bone dry but white, you might be running low fat. The easiest method to test regarding spark is to ground the plug against the motor head while turning, but do yourself a favor and simply buy a fresh NGK plug anyway. It's cheap insurance plus rules out a major variable ideal away.
Furthermore, don't ignore the plug cap alone. Those plastic caps at the end of the spark plug wire can actually unscrew from the wire. Sometimes they vibrate loose or the internal resistor neglects. If you may pull the cap from the wire effortlessly, you may just require to trim the quarter-inch off the particular end of the particular wire and screw the cap back on tight to get a new connection.
The particular Infamous Parking Brake Sensor
If you're still viewing a 660 raptor no spark condition, we need to talk regarding probably the most annoying "features" Yamaha ever place on this quad: the parking brake rev-limiter sensor. This particular thing is notorious for failing and cutting your spark or making the bike run like garbage.
There's just a little switch located on the particular clutch lever perch that detects in case the parking brake pedal is engaged. If that switch neglects or gets trapped, the CDI thinks you're wanting to ride with the brake on and this will cut the particular ignition. Plenty of men just bypass this particular entirely. You can follow the wires coming off the clutch perch down to the front of the frame and just unplug them. Generally, unplugging it solves the problem, but on some year versions, you may want to jump the wires jointly. If your Raptor suddenly gets spark back after messing along with these wires, you found your reason.
Testing the Stator and Pick-up Coil
If the easy repairs didn't work, it's time to split out the multimeter. The stator is usually a very typical failure point with regard to a 660 raptor no spark problem. The stator lives in the motor case and produces the electricity needed to fire the coil. Over period, the warmth and essential oil can break straight down the insulation on the copper windings.
You'll wish to find the cable harness coming out there of the still left side of the particular engine case. You're searching for the pick-up coil (also called the pulsar coil) and the source coil. Use your own multimeter to examine the resistance (ohms) between the particular colored wires. You'll need to look up the exact specifications for your specific year (2001-2005), typically, if you obtain an "open" reading through or zero level of resistance, the stator is usually toasted.
While you're at it, check the "pick-up" coil particularly. This little messfühler tells the CDI exactly when the piston is at the very best so it knows when to fire the spark. In the event that it's covered in metal shavings through a failing verified bearing (another typical 660 issue), it won't be capable to browse the flywheel properly, and you'll get no spark.
The Combustion Coil and Secondary Wire
If the stator checks fine, move down the line to the ignition coil. This is the little black box that the spark plug cable actually comes out of. It's responsible for taking the low voltage through the CDI and stepping up in order to the thousands of volts needed in order to jump the difference on the spark plug.
Look into the primary and supplementary resistance on the particular coil. Again, use your manual regarding the exact quantities, but if the coil is damaged or looks melted, it's likely performed. Also, check the floor wire that attaches the coil to the frame. The particular Raptor 660 frame is painted, and sometimes rust or even vibration can cause that ground connection to get poor. Scrape a little paint away to make sure you have got bare metal-to-metal get in touch with. A bad terrain is an one-way ticket to a 660 raptor no spark headache.
The "Brain" associated with the Operation: The CDI
The CDI (Capacitor Discharge Ignition) box is the brain that will controls everything. Sadly, these are hard to test with out a specialized device. Most people check the CDI simply by process of elimination—if everything else (stator, coils, plug, switches) testing fine, then your CDI is the most likely loser.
In case you have a buddy along with a 660 Raptor, the easiest method to check this will be to swap his CDI into your bike for five minutes. In the event that your bike fire right up, a person know you have to purchase a new container. Just be careful with cheap auction web sites CDIs. Some of them work great, but others possess weird timing figure that can create your motor run hot or punch back against the starter. If you may swing it, an OEM Yamaha box or even a reputable brand name like DynaFS is usually usually the better wager.
Wiring Funnel and Connection Problems
Since these bikes are almost two decades outdated, the wiring use itself can end up being the supply of your own 660 raptor no spark woes. Take the seat and tank away and really appear at the wires. Look for locations in which the harness might have rubbed against the frame, specifically near the steerage stem.
Check every single plastic connector. Disconnect them, search for green corrosion or bent pins, and hit them with several electrical contact cleaner. Sometimes a put feels like it's snapped together, but one of the pins provides pushed out the back, meaning this isn't actually producing contact.
Don't forget the primary fuse as well as the battery connections. While a dead battery may usually keep the engine from turning at all, an unfastened ground strap through the battery to the engine block out may cause all kinds of intermittent spark issues. Make certain everything is tight and clean.
Wrapping It Up
Dealing with a 660 raptor no spark scenario is definitely the test of tolerance. It's easy to get frustrated plus start buying parts you don't want, but if you're methodical about it, you'll find the crack in the chain. Start with that spark plug and the parking brake pedal sensor—seriously, those two solve a huge percent of these instances.
If it's deeper than that, trust your own multimeter. The stator and the pick-up coil are the heavy hitters, and once you control those out, you're usually just a CDI or the bad ground aside from hearing that big single-cylinder thumper roar back in order to life. Just consider your time, look at your connections, and you'll be back away throwing roost within no time.