Mountfield SP185 Problems

The Mountfield SP185 lawnmower, particularly those fitted with Honda engines, has been noted by some users to experience cold-start issues. The problem seems to manifest in the form of the engine failing to start in cold conditions without external interventions like using carb cleaner. Once warmed up, however, the machine runs smoothly and can be restarted with the pull cord.

Potential Causes

1. Absence of Primer Bubbles: The carburetor doesn’t come equipped with primer bubbles, which may affect the cold start.
2. Old or Stale Fuel: Old fuel, especially if left over from the previous season, can deteriorate and may not ignite as effectively.
3. Dirty Carburetor: Over time, carburetors can become clogged with debris or residues which can affect performance.
4. Faulty or Worn Out Spark Plug: An old or faulty spark plug may not produce the necessary spark to ignite the fuel-air mixture.

Suggested Solutions

1. Clean the Carburetor: A majority of the issues arising in petrol tools, including the Mountfield SP185, are often carburetor related. Cleaning the carb can rectify the issue in many cases.
2. Use Quality Fuel: Consider using aspen fuel, known for enhancing the smooth running of petrol engines. Alternatively, use fuel stabilizers like Briggs fuel fit to prevent fuel degradation over time.
3. Service the Lawnmower: Regular servicing, including changing the spark plug, air filter, oil, and cleaning the carburetor can alleviate the cold start issue. This routine also increases the overall lifespan and efficiency of the lawnmower.
4. Fresh Fuel for New Season: At the start of a mowing season, ensure that you use fresh fuel. If there’s old fuel in the tank, consider discarding it and refilling with new.
5. Check the Fuel System: If the float bowl is found to be dry, it might be an issue with the fuel reaching the carburetor. In this case, check for any blockages in the fuel line or potential issues with the float/needle.
6. Check the Spark Plug: Ensure the spark plug is clean and functioning. A dirty spark plug tip can be cleaned with a brush dipped in fuel.

To Repair or Replace?

If the lawnmower has been functioning for several seasons and requires replacement parts amounting to around £60, users are often torn between repairing the existing model or purchasing a new one for around £299. With the present eco-conscious era, many advocate for repairing over replacing, as it’s more environmentally friendly and often more cost-effective in the long run. Additionally, newer models come with added features like mulching capabilities, which may be a tempting upgrade for some.

Conclusion

While the Mountfield SP185 lawnmower has its set of challenges, particularly with cold starts, they are by no means insurmountable. Regular maintenance, using quality fuel, and ensuring the fuel system is in optimal condition can go a long way in ensuring the longevity and efficient performance of the mower. Whether you choose to repair or replace, understanding the root of the problem is key to making an informed decision.