Airhead starter relay. I pulled the relay and see that.
Airhead starter relay. A Oct 20, 2024 · One of the weakest links in the airhead starter system is the relay, they fail due to most of the time, corrosion or age. The solenoid is that can looking thing on the starter or else a small box up on the firewall or fender well. 5mm W x 25. 3 H (See Jun 15, 2023 · A guy brought me his 72 R60/5 with a starting problem that sounded like the “crickets” the relays had back in the day. Bike did nothing when starter button depressed. Of course, the relay still needs to operate in order for the starter to function. Nov 12, 2015 · Because I have little faith that the PO hasn't fiddled with this, the DIN numbers are gone from the relay, and there's no diagram on it, I'm asking for some help. Jan 31, 2025 · Discover common BMW Airhead starter problems, their causes, and effective troubleshooting solutions to keep your bike running smoothly. Up front I must say that I have searched all over and haven’t come across this particular problem and it’s checks. 1. May 6, 2025 · The starter relay was corroded inside and out, and was covered in a mucus-like substance. Because it's a bit difficult to see in the photo to which harness Oct 18, 2016 · The starter relay was corroded inside and out, and was covered in a mucus-like substance. I listed them in the likelihood of failure. 5mm L x 28. Well, they show the relay, but no number or price associated Original Equipment Genuine BMW Starter Relay / Repeat Start Prevention Relay Commonly referred to as the "cricket" relay. Part #: REL-775 Original Equipment Genuine BMW Starter Relay / Repeat Start Prevention Relay for BMW /5's only! (referred to as the "Cricket Relay") Replaces electromechanical, SR9570 while still retaining the re-start lock-out feature while the engine is running to prevent starter drive gear damage. Starter switch, 3. Starter motor. I pulled the relay and see that Aug 24, 2020 · Directions and components to replace the Original Electromechanical, SR9570 BMW Starter Relay. The new one has no numbers on it and is sealed in what appears to be clear Quality aftermarket BMW Starter Relay / Repeat Start Prevention Relay Commonly referred to as the "cricket" relay. Feb 27, 2009 · I bought a new starter relayfor my '72 R60/5 toaster since the other one's case had a mangled crimp and would regularly short out. Nov 16, 2019 · The starter/turn signal switch wires are fed straight through the headlight bucket to the main wiring harness so I can't short the ground without cutting the wire. The starter button has stopped working. All other electrical functions properly including turn signals (on same RH switch as starter button). I Any ideas? 81 R100RS attempted to start it with a very low battery, got a couple of cranks and then just a slight buzzing sound from the starter relay (inside the headlight). Please verify the SR9572 markings on your relay. Jul 26, 2010 · Would have to get down there to acesss my starter solenoid and short across the termianls to get the starter to turn over. I pulled the relay and see that The "Load Shed" relay, installed in the last Airhead motorcycles, is used for the same things, that is, to turn off the headlight when the starter motor is in use; but, the officially called Load Shed (Load Relief) relay works with more items. Because it's a bit difficult to see in the photo to which harness Nov 12, 2015 · Because I have little faith that the PO hasn't fiddled with this, the DIN numbers are gone from the relay, and there's no diagram on it, I'm asking for some help. Replaces original old electromechanical, SR9572 while still retaining the re-start lock-out feature while the engine is running to prevent starter drive gear damage. Apr 30, 2014 · Find the relay and unplug/replug it a few times. The old relay has numbers stamped on the circuit board, beside the spade connectors. Only in the /5 was the 'starter protection feature' incorporated this way. Starter relay 4. The solenoid relay closes, as shown by the RED arrow in the diagram above, sending power directly from the battery (+) terminal from the black wire connected to terminal (30) of the starter solenoid into the starter motor (indicated by the RED path) and the starter motor starts to spin. 2. Apr 21, 2018 · This document is part of a series of airhead electrical system documents. I am still in troubleshooting phase and have done my usual web research (I am new at Airheads maintenance). I've heard people have actually opened up the relay to clean the contacts. There are four main components of the starter system. Oh the other thing is I am absolutely useless with electrics, so please go gently on me and any expiations. A lot of Jun 9, 2012 · Starter and starter relay checks I have been battling some time with the starter problem. They are NOT interchangeable. Used as starter relay on BMW Airheads. The /5 starter relay problem NO OTHER BMW AIRHEAD, only the /5, had this problem, due to the added transistor circuit, faultily designed, inside the starter relay. Robert Fleischer: The Slash 5 (/5) starter relay ‘cricket’ noise & starter problem Robert Fleischer: Diode Boards & Grounding Wires On BMW Airhead Motorcycles [Details about how they work, changes in design and issues seen] Robert Fleischer: Ignition (System) [Details about how the various airhead and third party ignition systems work] Jan 3, 2021 · Can anyone point me to an alternate source for a starter relay for this old airhead I just picked up? MAX BMW tells me they are backordered until sometime next summer. Problem arose mid-ride when I stopped and met my wife for happy hour. The photo and diagram show how it was wired when it came apart. Note the Red conductor from the battery runs to the "30" terminal on the relay it is a "double" terminal, if it's loose, or broken, current will not continue to the main switch (dann ist alles kaputt!). Apr 15, 2015 · I have a 71 R75/5 with fuses installed in the headlight. (Repeat Start Prevention Relay, commonly referred to as the "cricket" relay) Vehicle Manufacturer: BMW Application: R Airhead Make/Model: R50/5, R60/5, R75/5, Model Years: 1969-1980 Manufacturer #: 12 41 1 350 775 , 1 350 775, SR9570 Nov 16, 2019 · The starter/turn signal switch wires are fed straight through the headlight bucket to the main wiring harness so I can't short the ground without cutting the wire. Explore a variety of relays for starter, fuel warning, siren, headlight, and horn to enhance your vehicle's performance and reliability. Quality aftermarket BMW Starter Relay. Mar 30, 2023 · electric starter troubleshooting hints by Duane Ausherman This page is about the BMW motorcycle models R50/5, R60/5, R75/5, R50/6, R60/6, R75/6, R90/6, R90S, R60/7, R75/7, R80/7, R100/7, R100S, R100RS. Battery. Apr 4, 2018 · The starter restart-protection relay is suspect, but shouldn't prevent power from reaching that main switch. Nov 27, 2017 · Greetings MOA mates, I currently have a starter issue on my R75/5: When I click the starter switch, the starter will start cranking but will not stop until I pull the battery. Commonly referred to as the "cricket" relay. Used as starter relay on BMW R Airheads. Jun 15, 2023 · A guy brought me his 72 R60/5 with a starting problem that sounded like the “crickets” the relays had back in the day. If your relay has SR9570, you will need REL-775 or REL-775EDL which looks identical but has different connection terminals and function. You can find the others here. BOSCH / Tyco Original Equipment SPST (Single Pole, Single Throw) Relay Vehicle Manufacturer: BMW Application: BMW Airhead Models Make/Model: BMW R60, R75, R80, R100 Model Years: BMW 1976 - 1984 Manufacturer #: BMW #: 61 31 1 243 207 BOSCH # 0 332 014 118, 0 332 019 151 Power Rating: 30 Amp, 12 volt Endurance Rating : 250,000 Cycles @ 30 Amps Dimensions: 28. I tried shorting the brown/black wire on the starter relay to ground but that doesn't crank the engine which leads me to suspect the starter relay rather than the ignition switch/wiring. You might see references to this /5 relay being called the "Starter Lockout Relay"; "Anti-start Protection Relay", etc. . Replaces original old electromechanical, SR9570 while still retaining the re-start lock-out feature while the engine is running to prevent starter drive gear damage. The corrosion caused the intermittent electrical problem, and how BMW had wired the relay to the main harness compounded the problem. Just visited Bob's BMW website, and they don't show a listing for an R90 starter relay. I then caharged up the battery but no action at all with the starter button - but an increased buz/vibratation from the starter relay if you flicked the kill switch off. Also Snowbum has a discussion about soldering the input and output red wires together to ensure that the power gets through the relay. The corrosion coupled with how BMW had connected the relay to the main harness caused the intermittent electrical problem. Electrical Basics /5 Series Electrical Components /5 Series Circuits /6 Series, 1975-76 Elect… Jul 18, 2022 · Therefore, the handlebar starter button activates a relay inside the starter relay and it in turn activates an even larger relay, called the starter solenoid, that attaches directly to the starter motor. They are more or less a relay that handles the heavy duty voltage from the battery. They are one and the same relay in HD Video Tutorials along with High quality replacement parts to keep your classic BMW Airhead on the road. Am able to kick start bike and all other functions behave (d) properly. Each can be tested easily. The starters are pretty robust but do in high mile situations need to be lubricated from time to time. l9pviig35n2d4bdqhvxfdimkimsdnj8nbrwx8