MERCURY 100-898436A01 Outboard Motor Cowling Hood Engine Top 75HP 90HP Cover Crack Bottom

( Manufacturer Part Number: 100-898436A01 ), ( Part Type: Hood Cover Motor Engine ), ( Country Of Origin: China )

Review MERCURY 75hp 90hp Outboard Motor Cowling Hood Engine Top Cover Used Crack Bottom

The **Mercury 100 Series 898436A01 75 90 HP Outboard Motor Cowling Hood and Engine Top Cover** is a precision-engineered, high-performance component designed to protect and enhance the functionality of Mercury s mid-sized outboard motors in the 75 to 90 horsepower range. Crafted from durable marine-grade materials, this cowling hood and engine top cover assembly serves as a critical barrier against environmental elements such as saltwater corrosion, debris, and UV exposure, which can degrade the longevity and performance of the motor s internal components. The design features a sleek, aerodynamic profile that not only improves the motor s streamlined appearance but also reduces drag, allowing for greater fuel efficiency and smoother operation at higher speeds. The cowling is engineered with reinforced seams and gaskets to ensure a watertight seal, preventing water ingress that could lead to electrical shorts or engine damage. Additionally, the top cover is designed to securely house the motor s ignition and electrical systems, shielding them from moisture and physical impact while maintaining optimal airflow for cooling. This component is compatible with the **Mercury 100 Series** outboards, including models like the **Mercury 7.5L, 8.0L, and 9.0L**, and is built to withstand the demands of both recreational and light commercial applications, from fishing boats and personal watercraft to small to mid-sized cruisers. Whether installed on a sleek center console or a rugged offshore vessel, this cowling hood and engine top cover combination exemplifies Mercury s commitment to durability, performance, and ease of maintenance, ensuring that your outboard remains reliable and efficient for years of use.

### **Pros and Cons of Buying a Used Mercury 100 HP (Model 898436A01) Outboard Motor with a Damaged Cowling/Hood, Engine Top Cover, and Cracked Bottom**

#### **Pros**

1. **Affordability** Used Mercury 100 HP outboards are significantly cheaper than new models, making them a budget-friendly option for boat owners who need reliable power without breaking the bank.

2. **Proven Reliability** Mercury 100 HP outboards (especially from the 2000s 2010s era) are known for durability and strong performance, provided they have been well-maintained.

3. **Good for Small to Medium Boats** The 100 HP range is well-suited for fishing boats, pontoons, and small cruisers, offering a balance between power and fuel efficiency.

4. **Easily Repairable** Since this is a common model, replacement parts (cowling, gaskets, seals, etc.) are widely available, and mechanics familiar with Mercury engines can perform repairs.

5. **Potential for Restoration** If the engine itself is in good condition, restoring the cowling, top cover, and bottom plate can be a manageable DIY or professional project, increasing the boat s resale value.

6. **Fuel Efficiency Compared to Larger Engines** At 75 90 HP (depending on trim), it consumes less fuel than larger outboards while still providing adequate speed and towing capacity for most recreational needs.

7. **Compatibility with Older Boats** Many older boats are designed to run on 100 HP engines, making this a practical choice for those who don t want to upgrade their entire setup.

---

#### **Cons**

1. **Visible Damage (Cowling, Hood, Top Cover, Cracked Bottom Plate)**

- A cracked bottom plate can indicate structural weakness, potentially leading to water intrusion, corrosion, or further damage if not repaired properly.

- A damaged cowling or top cover may affect aerodynamics, cooling efficiency, and protection against debris, increasing wear on internal components.

- Cosmetic issues can deter buyers, reducing resale value unless repairs are made.

2. **Potential Hidden Issues**

- **Water intrusion** (if the crack allowed water into the lower unit or engine bay).

- **Corrosion** (saltwater exposure can weaken metal over time).

- **Worn seals or gaskets** (leading to oil leaks or poor cooling).

- Without a thorough inspection (including pressure testing the lower unit and checking for oil leaks), hidden damage may go unnoticed.

3. **Repair Costs Could Be High**

- Replacing a bottom plate or cowling is manageable but requires welding or machining skills.

- If the crack is in a critical area (e.g., near the lower unit or drive shaft), repairs may be more complex and expensive.

- Labor costs for professional repairs can add up, especially if the engine needs disassembly for inspection.

4. **Fuel and Maintenance Costs Over Time**

- Older engines may require more frequent maintenance (e.g., fuel system cleaning, spark plug replacements, or timing belt changes if applicable).

- Poor cooling due to a damaged cowling could lead to overheating, increasing wear on the engine.

5. **Resale Value Concerns**

- Even after repairs, a used Mercury with visible damage history may not fetch as high a price as a fully restored or undamaged unit.

- Buyers may perceive it as a "project boat," which could limit its appeal to serious collectors or DIY enthusiasts.

6. **Warranty and Liability Risks**

- Used engines typically come with no warranty, meaning you bear all repair costs.

- If the damage was caused by prior neglect (e.g., lack of rust protection), future issues may be more frequent.

7. **Environmental and Safety Risks**

- A cracked bottom plate could allow water into the lower unit, leading to corrosion and potential failure while boating.

- Poorly sealed cowlings may allow debris to enter, damaging internal components.

---

### **Conclusion**

- The **engine itself is in good working condition** (no major corrosion, leaks, or mechanical failures).

- You are **prepared to invest in repairs** (either DIY or professionally).

- You **prioritize functionality over aesthetics** and plan to restore the boat s appearance later.

- You **get a thorough pre-purchase inspection** (including lower unit pressure testing, compression check, and oil analysis) to rule out hidden damage.

- The **crack is in a critical area** (e.g., near the lower unit or drive shaft).

- The **engine shows signs of neglect** (excessive corrosion, oil leaks, or poor performance).

- You **cannot afford or are unwilling to repair** the damage.

- You **plan to sell the boat quickly**, the cosmetic and structural issues may deter buyers.

---

### **Recommendation**

1. **Get a Professional Inspection First**

- Have a **marine mechanic or Mercury-certified technician** inspect the engine, lower unit, and damage extent.

- Request a **lower unit pressure test** to ensure no water intrusion.

- Check for **oil leaks, corrosion, and proper cooling system function**.

2. **Assess Repair Feasibility**

- If the **bottom plate crack is minor and can be welded or replaced**, proceed with repairs.

- If the **cowling or top cover is damaged**, consider replacing it these parts are relatively inexpensive.

- If the **engine shows signs of wear** (e.g., rough idle, overheating, or excessive smoke), weigh whether the repair cost justifies the purchase.

3. **Negotiate the Price**

- If the damage is confirmed to be superficial and the engine is sound, **ask for a discount** (typically 10 30% off market value for used engines with cosmetic flaws).

- If hidden issues are found, **walk away or renegotiate** don t pay full price for a potential money pit.

4. **Budget for Repairs**

- Allocate **at least $300 $800** for parts and labor, depending on the extent of damage.

- If the engine needs **major work** (e.g., new seals, timing belt, or lower unit rebuild), consider whether it s worth it.

5. **Consider Alternatives**

- If the engine is **too risky**, look for a **similar Mercury 100 HP in better condition** or a **rebuilt unit** (which may come with a warranty).

- If you re on a tight budget, a **smaller 75 HP Mercury** (if your boat can handle it) might be a safer bet.

6. **Proceed with Caution**

- If you decide to buy, **prioritize repairs immediately** to prevent further damage.

- **Store the boat properly** (especially in saltwater areas) to avoid corrosion.

- **Maintain the engine regularly** (oil changes, fuel system cleaning, cooling system checks).

### **Final Verdict**

This Mercury 100 HP **can be a good deal** if the **engine is sound and the damage is repairable**. However, **only proceed if you re confident in the inspection results and willing to invest in fixes**. If the damage is extensive or the engine shows signs of neglect, it may be smarter to **look for a better-condition used engine or a rebuilt unit** to avoid costly surprises. Always **prioritize safety and long-term reliability** over short-term savings.

Details:

This is a used item in the condition shown. Important: Please diagnose your issue before purchasing. These items are large and difficult to pack. May or may not match your paint.

Boxing cowlings makes the shipping costs go up even higher as carriers use dimensional weight.Pay particular attention to brackets, seals and pins. Phone do not always show enough detail. Use a PC or tablet. Mercury 75HP Outboard Motor Cowling Hood Engine Top Cover Used: condition: Used.

If you change your mind or find / repair old one. Sold as pictured.Please review all pictures not defects scratches and marks are always highlighted.

part #: 100898436a01 prices

• $195.00-$720.90

specifications ouboaen:

• for makes: Mercury
• mpn: 100-898436a01
• part type: Hood Cover Motor Engine
• country of origin: China

returns ouboaen:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

general ouboaen:

• Boat Parts > Outboard Engines Components > Cowlings Housings
• condition: Used

seller ouboaen:

• # reviews: 4250
• rating: 99.6%
• city: Brazoria, Texas

payments ouboaen:

• credit card: Discover
• wallet: Paypal
• other

shipping ouboaen:

• service: USPS Priority Mail
• cost: $89.00
• carrier: USPS
• type: Fixed
• class: Expedited
• transit: 6-12 Days

offer ouboaen:

• best offers: True
• availability: In Stock
• sold: 0
• started: May 8, 2026
• options: Ship-to-home
• quantity: 1

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