Repair of the kickstarter of the outboard motor: diagnosis and troubleshooting

The manual starter, or kickstarter, is one of the most loaded components of any outboard motor, and it is through it that the operator's hand is transmitted to the crankshaft to start the internal combustion engine. Frequent use, aggressive aqueous environments and natural wear of parts cause the mechanism to stop working properly, requiring the owner to intervene.

Owners of outboard motors often face a situation where the starter scrolls idly or, conversely, jams at the first spurt. kickstarter Proper diagnosis at the initial stage helps to avoid more serious breakdowns that can disable the engine itself.

In this article, we will discuss in detail the design of the starter device, typical malfunctions and methods of their elimination. You will learn how to properly disassemble the knot, replace worn springs and gears, and how to correctly assemble the mechanism back so that it lasts for many years.

Start-up mechanism design and operation

The design of the manual starter is relatively simple, but requires fine tuning for reliable operation. The main element is a ratchet mechanism that ensures the transmission of torque only in one direction. When a sharp jerk is on the handle, the gear enters into engagement with the engine flywheel, turning the crankshaft. Once the handle is started or stopped, the gear should instantly exit the engagement and return to its original position.

The key component here is return-springIt's the one that reels the cord and returns the ratchet to its original state, depending on the model of the motor, whether it's the one that's the one that's the one that's the one that's the one that's the one that's the one that's the one that's the one that's the one that's the one that's the one that's the one that's the other. Tohatsu, Yamaha or MercuryThe design can vary in the number of turns and the way the spring is attached, and it's in constant tension, which over time causes the metal to become tired and ruptured.

Also important are the gripper fingers and the ratchet dogs, which are made of hardened steel, but when hit or hit by sand, they can crack or get snatched. If these elements lose their shape, the starter will slip, and you can't start the motor. Lubricating all rubbing surfaces is a prerequisite for long-term service of the unit.

⚠️ Attention: The starter spring is compressed even after the casing has been disassembled. Careless removal can cause injury to the hands or face. Always use safety glasses and act with utmost care when working with stretched spring mechanisms.

To understand the processes that take place inside the node, let’s look at the main components in the table below, which will help you identify the details when disassembling.

Component	Function	Typical malfunction
Bendix gear	Transmission of rotation to flywheel	Slipping teeth, chipping
Return spring	Wrapping the cord, reversing the mechanism	Breaking, loss of elasticity
Ringer doggies	Back-rotation locking	Jamming, fracture.
Sliding bush	Direction of movement of the gear	Bullies, lack of lubrication

Features of lubrication of the snoring mechanism

For grease kickstarter can not use conventional motor oils, as they are too liquid and quickly flow. It is best to use thick lithium lubricants or special marine consistency lubricants that retain viscosity when in contact with water and do not freeze in the cold.

Diagnostics of malfunctions of the starter device

Before disassembly begins, you need to clearly define the nature of the malfunction. Often the problem lies not in the failure of parts, but in their malfunction due to pollution or lack of maintenance. Initial diagnosis saves time and avoids the purchase of unnecessary parts.

The most common problem is that the starter doesn't recoil the cord back, and in this case, it's usually the fault. return-springIt could have burst or lost its properties because of long-term use, and it's also worth checking if the cord in the outlet of the casing is clamped and there are no nodes on it.

If the handle is rotated freely and the engine is not started, then the ratchet mechanism is not engaged, and this can be caused by wear of the gear teeth of the back of the flywheel or by the broken dogs themselves. Sometimes the reason is trivial - the dried lubricant has turned into an abrasive mass that prevents the parts from moving.

• 🔍 Check the integrity of the cord: it should not have scuffs and tears.
• 🔍 Look at the handle: cracks can cause it to collapse at the most inopportune moment.
• 🔍 Evaluate the return effort: the cord should go into the case quickly and with a characteristic click.
• 🔍 Listen to the sound: an extraneous creak or clanging indicates dry friction or breakage.

Tools and preparation for repairs

For quality kickstarter It's going to take the minimum toolkit that any boat owner has, but it's important to prepare the workspace so that small parts like washers and locking rings don't get lost, and it's best to work on a clean desk in good light.

You'll need wrenches of the right size, usually a metric set. Don't forget to prepare a fastener folding container, because bolts can be of different lengths. To clean parts from old lubrication and dirt, Kalosha gasoline or a special carburettor cleaner is ideal.

Pay special attention to lubricants. After repair, all rubbing surfaces should be covered with a layer of waterproof lubricant. You may also need a new starter cord if the old one is damaged. The diameter of the cord should strictly comply with the recommendations of the engine manufacturer.

Step-by-step instructions for disassembly and assembly

The disassembly process starts with removing the top lid of the engine and detaching the throttle control if it interferes with access. Then the bolts that attach the starter body to the cylinder block are twisted out. Beware: there may be washers of different thicknesses under some bolts, which must be memorized or decomposed in the order of removal.

Once the body is removed from the engine, you can start disassembling the mechanism itself, first remove the central nut or the locking ring that holds the pulley, then carefully remove the pulley with the wound cord, and at this point you need to be extremely careful with the spring. If it is intact, try not to let it unwind uncontrollably.

The assembly is done in reverse order, but with an important feature, a spring pre-platform. The cord is wound on the pulley, and then several turns are made towards the tension of the spring (usually counterclockwise), the spring is fixed with a finger or hooked to a special protrusion, and the pulley is installed in place. It is important that the cord exits through the hole smoothly, without distortion.

⚠️ Attention: When installing the pulley, make sure that the protrusions of the ratchet mechanism correctly match the response parts on the flywheel. Incorrect installation will cause the starter to jam on the first start.

The final step is to test the work. Pull the cord several times. It has to come out with moderate effort, and the return has to be energetic and full. If the cord stays hanging or comes back sluggishly, then the spring is not properly cocked or installed correctly.

Replacement of spring and starter cord

Replacing the spring is the most important part kickstarterOld springs often become useless and there is no point in repairing them, it is better to install a new part immediately, selected by catalog number or size (external diameter, internal diameter, thickness of the wire).

Remove the old cord and completely remove the spring from the landing site. Clean the spring's lodging of dirt and old lubricant. Lay the new spring gently in the case, keeping track of the direction of the turns. Often manufacturers mark the inner and outer loop of the spring, which makes installation easier.

If you need to change the cord, put a new one through the hole in the drum and tie a reliable knot (usually double or triple) on the inside. Run the cord through the body and handle, tie the knot on the handle. Remember to melt the ends of the synthetic cord with a lighter so that they do not open.

• 🛠️ Use a cord with a diameter of 4-5 mm for low-power engines up to 10 hp.
• 🛠️ For engines with a capacity of 15-30 hp, the cord with a thickness of 5-6 mm is optimal.
• 🛠️ Powerful motors require a cord with a diameter of 6 mm or more.

Critically important: the length of the cord should be selected so that in a fully elongated state to the handle there is still 15-20 cm of reserve, otherwise the knot inside the drum can hit the body.

Typical errors in starter maintenance

Many owners make mistakes that negate all repair efforts, one of the most common is using too thick lubricant in winter or too liquid in summer, and the viscosity of the lubricant must be consistent with the temperature of the boat.

Another mistake is ignoring the condition of the washers and bushings. If the gear has a backlash, it will wear out unevenly, leading to noise and quick failure. The backlash is often eliminated by installing additional adjusting washers, which are sometimes lost in previous repairs.

Also, don't neglect to clean the body of sand. The sand that gets inside the mechanism works like an abrasive, quickly grinding the gear teeth. After every trip to the pond, especially on the sandy bottom, it is useful to blow through the knot with compressed air or thoroughly wipe the available parts.

Can I use a trimmer cord to replace it?

The trimmer cord is only a temporary measure, it has a different weaving structure and is less resistant to abrasion on the edge of the hole. Use a specialized core starter cord for continuous operation.

Why does the starter spin tight after assembly?

You may have pulled the spring too hard during assembly or misfolded the direction of winding, and it may also be because of the lack of lubrication on the axles or the overtended central bolt that deformed the bushing.

How often do I need to change the cord?

The resource of the cord depends on the intensity of use. On average, when you are actively operating (20-30 launches per season), the cord lasts 3-5 years, change it when you see shags, scuffs or change the color of the fibers.

Do I need to disassemble the starter for winter storage?

You don't need to disassemble it completely. You just need to treat the mechanism with conservation lubrication and pull the cord several times to distribute the lubricant, and you'd better keep the engine in a dry room, taking it off the boat.

What is the danger of water getting inside the starter?

Water washes out the lubricant and causes corrosion of metal parts. If the water freezes, it can block the mechanism or break the body. Once it enters the water, the knot must be dried and lubricated.